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      <image:title>AgSil 16h Unavailable? Here’s How to Use AgSil 25 Instead</image:title>
      <image:caption>AgSil 16h shortage solutions — Pro Powders Silica Pro and AgSil 25 potassium silicate replacement options</image:caption>
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    <loc>https://customhydronutrients.com/blogs/news/new-reduced-pricing-on-haifa-fertilizers-at-custom-hydro</loc>
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      <image:title>New Reduced Pricing on Haifa Fertilizers at Custom Hydro</image:title>
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    <loc>https://customhydronutrients.com/blogs/news/hydroponic-fertilizers-cost-analysis-and-practical-solutions</loc>
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      <image:title>Hydroponic Fertilizers: Cost Analysis and Practical Solutions</image:title>
      <image:caption>Hydroponic fertilizer cost analysis — comparing water-soluble nutrient options for commercial greenhouse and fertigation growers in the USA</image:caption>
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    <loc>https://customhydronutrients.com/blogs/news/top-organic-pesticides-for-healthier-specialty-crops</loc>
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      <image:title>Top Organic Pesticides for Healthier Specialty Crops</image:title>
      <image:caption>Organic pesticide options for specialty crops — neem oil, pyrethrin, essential oils, beneficial bacteria</image:caption>
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    <loc>https://customhydronutrients.com/blogs/news/achieving-maximum-yields-a-diy-guide-to-custom-hydroponic-fertilizers</loc>
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      <image:title>Achieving maximum yields: A DIY guide to custom hydroponic fertilizers</image:title>
      <image:caption>Custom hydroponic nutrient solution being mixed from raw mineral salts including calcium nitrate, potassium nitrate, and monopotassium phosphate</image:caption>
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    <loc>https://customhydronutrients.com/blogs/news/say-goodbye-to-pests-with-customhydronutrients-effective-biological-options</loc>
    <lastmod>2026-04-21T12:52:33-05:00</lastmod>
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      <image:title>Biological Pest Control for High-Value Crops: Identifying Pests &amp; Choosing Organic Solutions</image:title>
      <image:caption>Cannabis grower inspecting plants for pests using a loupe — organic and biological pest control solutions</image:caption>
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  <url>
    <loc>https://customhydronutrients.com/blogs/news/best-bloom-fertilizers-for-flowering-crops-a-growers-guide</loc>
    <lastmod>2026-04-21T12:53:01-05:00</lastmod>
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  <url>
    <loc>https://customhydronutrients.com/blogs/news/the-benefits-of-supplemental-and-corrective-foliar-feeding-for-your-plants</loc>
    <lastmod>2026-04-21T14:40:26-05:00</lastmod>
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    <loc>https://customhydronutrients.com/blogs/news/coconut-coir-growing-media-for-indoor-specialty-crops-a-complete-guide</loc>
    <lastmod>2026-04-21T12:53:27-05:00</lastmod>
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      <image:title>Coconut Coir Growing Media for Indoor Specialty Crops: A Complete Guide</image:title>
      <image:caption>Coconut coir grow bags for indoor specialty crop production — Riococo, FibreDust, JR Croptech, and Root Royale</image:caption>
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    <loc>https://customhydronutrients.com/blogs/news/the-experts-guide-to-custom-fertilizer-concentrates-for-professional-horticulturalists</loc>
    <lastmod>2026-04-21T12:36:07-05:00</lastmod>
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      <image:title>The Expert&apos;s Guide to Custom Fertilizer Concentrates for Professional Horticulturalists</image:title>
      <image:caption>Water-soluble fertilizer raw inputs for custom concentrate mixing — calcium nitrate, monopotassium phosphate, magnesium sulfate, potassium nitrate, and potassium sulfate</image:caption>
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    <loc>https://customhydronutrients.com/blogs/news/water-soluble-organic-fertilizers-for-fertigation-and-hydroponics-systems</loc>
    <lastmod>2026-04-21T12:36:08-05:00</lastmod>
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      <image:title>Water Soluble Organic Fertilizers for Fertigation and Hydroponics Systems</image:title>
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  <url>
    <loc>https://customhydronutrients.com/blogs/news/how-to-calculate-pore-water-electrical-conductivity-from-bulk-soil-ec</loc>
    <lastmod>2026-04-21T12:36:08-05:00</lastmod>
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      <image:title>How to Calculate Pore Water Electrical Conductivity from Bulk Soil EC</image:title>
      <image:caption>Hilhorst equation diagram for calculating pore water electrical conductivity from bulk soil EC and volumetric water content</image:caption>
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    <loc>https://customhydronutrients.com/blogs/news/sensecap-custom-greenhouse-monitoring</loc>
    <lastmod>2026-04-21T12:36:09-05:00</lastmod>
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      <image:title>SenseCAP Custom Greenhouse Monitoring</image:title>
      <image:caption>SenseCAP S210X LoRaWAN wireless sensors deployed in a commercial greenhouse for real-time soil moisture, temperature, and EC monitoring</image:caption>
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  <url>
    <loc>https://customhydronutrients.com/blogs/news/specialty-crop-fertilizers-pre-mixed-options-for-small-medium-and-large-scale-cultivation</loc>
    <lastmod>2026-04-21T12:54:32-05:00</lastmod>
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  <url>
    <loc>https://customhydronutrients.com/blogs/news/best-calcium-nitrate-fertilizers-for-fertigation-and-hydroponics</loc>
    <lastmod>2026-04-21T12:36:09-05:00</lastmod>
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      <image:title>Best calcium nitrate fertilizers for fertigation and hydroponics.</image:title>
      <image:caption>Four-way calcium nitrate fertilizer comparison — YaraLiva CalciNit, Haifa Cal GG, Haifa Cal Prime, and PureCal for hydroponics and fertigation</image:caption>
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  <url>
    <loc>https://customhydronutrients.com/blogs/news/agsil-potassium-silicate-and-fertilizer-injector-concentrates</loc>
    <lastmod>2026-08-10T13:04:53-05:00</lastmod>
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      <image:title>AgSil Potassium Silicate and Fertilizer Injector Concentrates</image:title>
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  <url>
    <loc>https://customhydronutrients.com/blogs/news/custom-commercial-fertilizers-for-high-value-crop-cultivation</loc>
    <lastmod>2026-04-21T14:40:26-05:00</lastmod>
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      <image:title>Custom Commercial Fertilizers for High-Value Crop Cultivation</image:title>
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  <url>
    <loc>https://customhydronutrients.com/blogs/news/why-switching-from-hps-to-led-increases-water-use-efficiency-and-what-it-means-for-your-ec</loc>
    <lastmod>2026-09-02T19:02:02-05:00</lastmod>
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      <image:title>Why Switching from HPS to LED Increases Water Use Efficiency — And What It Means for Your EC</image:title>
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    <loc>https://customhydronutrients.com/blogs/news/potassium-carbonate-as-a-hydroponic-ph-up-adjuster-what-growers-need-to-know</loc>
    <lastmod>2026-03-24T09:30:06-05:00</lastmod>
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      <image:title>Potassium Carbonate as a Hydroponic pH Up Adjuster: What Growers Need to Know</image:title>
      <image:caption>Potassium carbonate powder and potassium hydroxide flakes next to a pH meter probe in hydroponic nutrient solution, with healthy plant roots in a hydroponic system in the background.</image:caption>
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    <loc>https://customhydronutrients.com/blogs/news/the-ro-myth-why-most-commercial-growers-dont-need-reverse-osmosis-water</loc>
    <lastmod>2026-04-21T12:36:10-05:00</lastmod>
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      <image:title>The RO Myth: Why Most Commercial Growers Don&apos;t Need Reverse Osmosis Water</image:title>
      <image:caption>RO system drain line continuously discharging concentrate water into a floor drain in a commercial CEA facility utility room</image:caption>
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  <url>
    <loc>https://customhydronutrients.com/blogs/news/shipping-hazardous-agricultural-chemicals-what-commercial-buyers-need-to-know</loc>
    <lastmod>2026-04-16T16:31:48-05:00</lastmod>
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      <image:title>Shipping Hazardous Agricultural Chemicals: What Commercial Buyers Need to Know</image:title>
      <image:caption>A pallet of hazardous material freight staged for LTL shipment with DOT Class 5.1 oxidizer placard labeling</image:caption>
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    <loc>https://customhydronutrients.com/blogs/news/how-to-choose-the-right-micronutrient-chelate-for-your-crop</loc>
    <lastmod>2026-04-21T08:00:06-05:00</lastmod>
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      <image:title>How to Choose the Right Micronutrient Chelate for Your Crop</image:title>
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  <url>
    <loc>https://customhydronutrients.com/blogs/news/iron-chelate-for-hydroponics-and-fertigation-edta-dtpa-eddha-and-amino-acid-compared</loc>
    <lastmod>2026-06-07T09:43:15-05:00</lastmod>
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      <image:title>Iron Chelate for Hydroponics and Fertigation: EDTA, DTPA, EDDHA, and Amino Acid Compared</image:title>
      <image:caption>Five iron chelate fertilizer products grouped together — Sequestar EDTA, Rexolin DTPA, Sequestar EDDHA, Haifa Micro DTPA, and Metalosate Iron — representing the full range of iron chelate chemistries for hydroponics and fertigation</image:caption>
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  <url>
    <loc>https://customhydronutrients.com/blogs/news/nitrogen-form-and-ph-choosing-the-right-nitrogen-source-for-soilless-and-hydroponic-systems</loc>
    <lastmod>2026-05-12T08:00:04-05:00</lastmod>
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      <image:title>Nitrogen Form and pH: Choosing the Right Nitrogen Source for Soilless and Hydroponic Systems</image:title>
      <image:caption>Infographic showing how nitrate and ammonium nitrogen uptake affect root zone pH — nitrate causes slow gradual pH rise, ammonium causes aggressive acidification in hydroponic systems.</image:caption>
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    <loc>https://customhydronutrients.com/blogs/news/peters-professional-canna-plus-feed-chart</loc>
    <lastmod>2026-05-05T08:00:05-05:00</lastmod>
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      <image:title>Peters Professional Canna+ Feed Chart: The Complete Hydroponic Nutrient Program</image:title>
      <image:caption>Peters Professional Canna+ hydroponic nutrient feed chart — complete program by ICL including 5-11-26, CalciNit, 14-0-8 Boost, 0-15-30 Finisher, Liquid S.T.E.M., and H2Pro</image:caption>
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    <loc>https://customhydronutrients.com/blogs/news/microalgae-and-soil-biology-the-science-behind-sigma-microalgae</loc>
    <lastmod>2026-05-19T12:00:03-05:00</lastmod>
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      <image:title>Microalgae and Soil Biology: The Science Behind Sigma MICROALGAE</image:title>
      <image:caption> Laboratory setting with scientific glassware and microalgae samples illustrating soil microbiology science</image:caption>
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  <url>
    <loc>https://customhydronutrients.com/blogs/news/edta-in-the-environment-setting-the-record-straight-on-agricultures-role</loc>
    <lastmod>2026-04-12T10:50:01-05:00</lastmod>
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      <image:title>EDTA in the Environment: Setting the Record Straight on Agriculture&apos;s Role</image:title>
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  <url>
    <loc>https://customhydronutrients.com/blogs/news/wollastonite-soilless-media-silicon-release-rates-data</loc>
    <lastmod>2026-04-21T19:00:05-05:00</lastmod>
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      <image:title>Wollastonite in Soilless Media: What the Data Actually Shows</image:title>
      <image:caption>Fine white wollastonite powder spilling from a kraft paper bag beside a black nursery container filled with dark peat-based soilless growing media, on a clean white background.</image:caption>
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  <url>
    <loc>https://customhydronutrients.com/blogs/news/hydroponic-lettuce-nutrient-solutions-practical-feeding-for-dwc-nft-and-raft-systems</loc>
    <lastmod>2026-08-08T14:30:05-05:00</lastmod>
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      <image:title>Hydroponic Lettuce Nutrient Solutions: Practical Feeding for DWC, NFT, and Raft Systems</image:title>
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  <url>
    <loc>https://customhydronutrients.com/blogs/news/why-low-rate-soluble-fertilizers-actually-boost-your-soil-biology</loc>
    <lastmod>2026-06-23T16:16:33-05:00</lastmod>
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      <image:title>Why Low-Rate Soluble Fertilizers Actually Boost Your Soil Biology</image:title>
      <image:caption>Cross-section of living market garden soil showing drip tape irrigation at the surface, dense white root networks, and active fungal mycelium biology underground with lush vegetable crops growing above</image:caption>
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  <url>
    <loc>https://customhydronutrients.com/blogs/news/iba-rooting-hormone-propagation-guide</loc>
    <lastmod>2026-09-25T10:00:02-05:00</lastmod>
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      <image:title>IBA Rooting Hormone: Compare Hormodin, Hortus &amp; Clonex</image:title>
      <image:caption>Hormodin IBA rooting powder for plant cutting propagation</image:caption>
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  <url>
    <loc>https://customhydronutrients.com/blogs/news/perfect-blend-chick-magic-sigma-bio-fertilizer-comparison</loc>
    <lastmod>2026-10-03T15:30:03-05:00</lastmod>
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      <image:title>Chicken Manure Fertilizers Compared: Perfect Blend, Chick Magic, Harmony and SIGMA Bio</image:title>
      <image:caption>Organic fertilizer granules beside vegetable seedlings, with an illustrated cutaway of roots and soil microbes.</image:caption>
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