![EcoPlus Small Round Air Stone [Ships To Western States Only] 728415](https://i0.wp.com/www.horticulturesource.com/fresh/wp-content/uploads/2019/07/HGC728415-01.jpg?fit=80%2C80&ssl=1 "EcoPlus Small Round Air Stone [Ships To Western States Only] 728415")
![EcoPlus Medium Round Air Stone [Ships To Western States Only] 728410](https://i0.wp.com/www.horticulturesource.com/fresh/wp-content/uploads/2019/07/HGC728410-01.jpg?fit=80%2C80&ssl=1 "EcoPlus Medium Round Air Stone [Ships To Western States Only] 728410")
Description
pH measuring equipment must be cleaned and calibrated regularly to ensure they are giving the user accurate readings. pH instruments are calibrated to pH 7.0 first (buffer) then to pH 4.0 (slope). Calibration Solution should be stored in a cool place out of direct sun and heat. They should be stored with the lids securely tightened.””
![Air King Clip On Fan 6 in [Ships To East Coast Only] *CLOSEOUT* 736735](https://i0.wp.com/www.horticulturesource.com/fresh/wp-content/uploads/2019/07/HGC736735-01.jpg?fit=324%2C324&ssl=1 "Air King Clip On Fan 6 in [Ships To East Coast Only] *CLOSEOUT* 736735")
![GH Flora Nectar FruitnFusion 2.5 Gallon (2/Case) [Ships To Western States Only] 732178](https://i0.wp.com/www.horticulturesource.com/fresh/wp-content/uploads/2019/07/HGC732178-01.jpg?fit=324%2C324&ssl=1 "GH Flora Nectar FruitnFusion 2.5 Gallon (2/Case) [Ships To Western States Only] 732178")
![Hydro Flow Ebb & Flow Tub Outlet Fitting 1/2 in (13mm) (10/Bag) (10 each) [Ships To Western States Only] *CLOSEOUT* 708570](https://i0.wp.com/www.horticulturesource.com/fresh/wp-content/uploads/2019/07/HGC708570-01.jpg?fit=324%2C324&ssl=1 "Hydro Flow Ebb & Flow Tub Outlet Fitting 1/2 in (13mm) (10/Bag) (10 each) [Ships To Western States Only] *CLOSEOUT* 708570")
![Alchemist H2O2 Liquid Oxygen 34% Quart (24 each) SPECIAL ORDER [Minimum Order Quantity 10] (Not for sale in CT DE IA ID IL MD MN ND NE NJ NM OR PR SD TN VA WI WV WY) 704553](https://i0.wp.com/www.horticulturesource.com/fresh/wp-content/uploads/2019/07/HGC704553-01.jpg?fit=324%2C324&ssl=1 "Alchemist H2O2 Liquid Oxygen 34% Quart (24 each) SPECIAL ORDER [Minimum Order Quantity 10] (Not for sale in CT DE IA ID IL MD MN ND NE NJ NM OR PR SD TN VA WI WV WY) 704553")
![Alchemist H2O2 Liquid Oxygen 34% 5 Gallon (2 each) SPECIAL ORDER [Minimum Order Quantity 16] (Not for sale in CT DE IA ID IL MD MN ND NE NJ NM OR PR SD TN VA WI WV WY) 704555](https://i0.wp.com/www.horticulturesource.com/fresh/wp-content/uploads/2019/07/HGC704555-01.jpg?fit=324%2C324&ssl=1 "Alchemist H2O2 Liquid Oxygen 34% 5 Gallon (2 each) SPECIAL ORDER [Minimum Order Quantity 16] (Not for sale in CT DE IA ID IL MD MN ND NE NJ NM OR PR SD TN VA WI WV WY) 704555")
![Hydro Flow Ebb & Flow Tub Outlet Fitting 1 in (25mm) (10/Bag) (10 each) [Ships To Western States Only] *CLOSEOUT* 708580](https://i0.wp.com/www.horticulturesource.com/fresh/wp-content/uploads/2019/07/HGC708580-01.jpg?fit=324%2C324&ssl=1 "Hydro Flow Ebb & Flow Tub Outlet Fitting 1 in (25mm) (10/Bag) (10 each) [Ships To Western States Only] *CLOSEOUT* 708580")
![Alchemist H2O2 Liquid Oxygen 34% 55 gallon SPECIAL ORDER [Minimum Order Quantity 5] (Not for sale in CT DE IA ID IL MD MN ND NE NJ NM OR PR SD TN VA WI WV WY) 704548](https://i0.wp.com/www.horticulturesource.com/fresh/wp-content/uploads/2019/07/HGC704548-01.jpg?fit=324%2C324&ssl=1 "Alchemist H2O2 Liquid Oxygen 34% 55 gallon SPECIAL ORDER [Minimum Order Quantity 5] (Not for sale in CT DE IA ID IL MD MN ND NE NJ NM OR PR SD TN VA WI WV WY) 704548")
![Alchemist H2O2 Liquid Oxygen 34% Gallon (8 each) SPECIAL ORDER [Minimum Order Quantity 13] (Not for sale in CT DE IA ID IL MD MN ND NE NJ NM OR PR SD TN VA WI WV WY) 704550](https://i0.wp.com/www.horticulturesource.com/fresh/wp-content/uploads/2019/07/HGC704550-01.jpg?fit=324%2C324&ssl=1 "Alchemist H2O2 Liquid Oxygen 34% Gallon (8 each) SPECIAL ORDER [Minimum Order Quantity 13] (Not for sale in CT DE IA ID IL MD MN ND NE NJ NM OR PR SD TN VA WI WV WY) 704550")
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