How to figure out resevoir size needed for Ebb and Flow.

Just wanted to pass on a little info I used when I built my Ebb and Flow grow system. I was able to build my own system for way less money than buying a ready made one. After you decide on a flood tray , you will need a resevoir. Here is a formula to figure out what size you need.


Nutrient Reservoir: Once you have chosen the tray size you will then need to size a reservoir for the tray. The calculation for this is quite simple: Height you wish to flood in the tray (H) x Width of the tray (W) x Length of the tray (L). For this calculation it is best to convert feet into inches. Then multiply the cubic inches by 0.0043 to convert it into gallons.

Example:
For this example lets use a 3’ x 6’ American Agritech tray. The plants will be growing in 6”x6” rockwool cubes, thus the tray will flood up to 4”.

Reservoir size required (gal) = ((3’x12) x (6’ x 12) x 4”) x 0.0043
= 36” x 72” x 4” x 0.0043
= 45 gallons (minimum)

nice copy n paste...where the reff to this....lol hypocrite

LOL , I live in a college town and these came from my notes from my mentor when I was getting started . I can't mention his name so lets give credit to Colorado State University. These guys are loaded with info and will share if you ask. Educated stoners.

using the same tray. i have a 70 gallon res and my pump struggles to flood tray.pushes up air bubbles at the 9 minute mark. floods for 15. im going to 100gal res so i only have to top it every few days