Feeding

[stoner87]

I have a 17 gallon reservoir that I am using. When I add nutrients am I adding it for the full 17 gallons or the gallon that I am adding the nutrients to?
So am I adding nutrients for 17 gallons or just the 1 gallon?

[ellz]

Typically, a feed schedule or label instructions are for 1 gallon so if you are filling the reservoir you would multiple by 17. However, if you are using a DWC system (where the roots sit above a reservoir with water) you want to leave air space above the water line between the plants. They need air space to breathe. I usually fill my reservoir half way so if you use a 17 gal you would want to fill about 8-1/2 gallons, which you would need to add whatever the nutrient label says times 8.5 gallons.

[stoner87]

Ellz thank you

[ellz]

No problem.