ph adjusterGeneral Hydroponics pH Control Kit (pH Up, pH Down, Test Indicator)β
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4.7~$22Buy Now on AmazonSee full details
tds-meter
Digital TDS Meter & Water Thermometer Combo β Auto Temperature Control
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Β½4.5 / 5
~$16Buy now on Amazon (opens in new tab)About this product
A dual-function pen that reads TDS and water temperature simultaneously β the minimal two-in-one tool for monitoring reservoir conditions at a glance.
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4.8~$35Buy Now on AmazonSee full details
climate controllerInkbird ITC-308S Aquarium Temperature Controller (Dual-Outlet Thermostat)β
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4.5~$42Buy Now on AmazonSee full details
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