{"product_id":"aqua-master-tools-e300-pro-substrate-ec-temp-meter","title":"Aqua Master Tools E300 Pro Substrate EC\/Temp Meter","description":"\u003ch2\u003eCheck EC directly in the substrate — no runoff sample needed\u003c\/h2\u003e\u003cp\u003eMost EC meters are built to test liquid, which means testing your growing medium means squeezing out a runoff sample first and hoping it is representative of what the roots are actually sitting in. The E300 Pro is a substrate meter built to skip that step entirely: its probe is pushed straight into coco, rockwool or soil and gives an instant EC and temperature reading from the medium itself, which is a much more direct way to catch salt build-up or under\/over-feeding before it shows up as a visible problem on the plant.\u003c\/p\u003e\u003cp\u003eIt is aimed at coco and rockwool growers running regular runoff-style checks who want faster, more direct readings without the mess of squeezing samples, and at anyone diagnosing a suspected nutrient lockout or salt build-up issue mid-grow. Like the rest of the Aqua Master Tools range it uses a replaceable electrode, so the part that takes the physical wear of repeated substrate insertion can be swapped out without buying a new meter, and the waterproof housing stands up to regular use around wet growing media.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect substrate insertion\u003c\/strong\u003e — no runoff sample needed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasures EC and temperature\u003c\/strong\u003e together in one reading\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaceable electrode\u003c\/strong\u003e extends the working life of the meter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWaterproof housing\u003c\/strong\u003e built for regular use around wet media\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdeal for coco and rockwool\u003c\/strong\u003e growers checking for salt build-up\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv class=\"hcs-specs\"\u003e\u003cul\u003e\n\u003cli\u003eMeasures: EC and temperature, direct substrate insertion\u003c\/li\u003e\n\u003cli\u003eElectrode: replaceable\u003c\/li\u003e\n\u003cli\u003eWaterproof: yes\u003c\/li\u003e\n\u003cli\u003eBest suited to: coco, rockwool, soil\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e","brand":"Aqua Master Tools","offers":[{"title":"Handheld Meter","offer_id":53500711829770,"sku":"AMT-E300PRO-SUBSTRATE-METER","price":109.55,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/AquaMasterSubstrateECTempE3001.png?v=1786377499","url":"https:\/\/hydrocropshop.co.uk\/products\/aqua-master-tools-e300-pro-substrate-ec-temp-meter","provider":"Hydro Crop Shop","version":"1.0","type":"link"}