I really had a struggle with figuring out what size the sump needed to be to handle the water load from my two grow beds.  As LUCK would have it, the system as built works perfectly. With the media in the growbeds the amount of water draining back to the sump tank is about 3 or 4 inches under the rim.  Perfectly sized. To that end, let me share my bed sizes and capacities...

Note: 0.00432900433 is the cubic inch to gallon conversion factor

Fish Tank

IBC…

I started researching AP about 3 years ago and decided that I'd try to make a system my self.  After much trial and error, I've managed to place all the pieces together.  I decided to build the system in a greenhouse.  The harbor freight 10x12 greenhouse was an affordable choice.  I am moderately satisfied with it.  I don't think that the quality of it is up to par, however the price isn't too bad.  If money were no object (I wish!) I'd have built the greenhouse from scratch, however when I…