Hey....I built one pretty much just like yours....I did not use the weather stripping and have not had too many problems with leaks...I like your tip with the PVC piece on the bottom of the pump. I am wondering what you did for the cord(s) going into the box...I drilled a hole for the neoprene insert, stuck the cords through, and sealed it with silicone caulk. I have to remove and replace this seal every 3-4 runs. Got any suggestions or better ideas? For nutes I use: Clonex, a small amount of flowering nutes, Superthrive, and Great White. I get awesome results! Thanks for posting. i am just looking for ideas on here to improve my technique. 

where did you get the 396gph pump i got a 400 gph and there dont seem too be any pressure to spry the water out of the misters

bout $60 total.
Cut the the top off a black trash bag and silicone it to the underside of the lid to prevent water spraying into edges and leaking.

fuckin A

Can u please state the economic cost of supplies!

See the edit.
Leaks seem to originate from the sprayer hieght being right where the sprayers shoot into the edges of the lid. Simply raise or lower the sprayer assembly until it doesnt leak.
:)

ok so were do you put the weather strpping?

mine has it on the tub itself and on the lid part to cause it wobbled when I had it just on the lid but it leeks like a mo fo now what do I do?

Awesome, can't wait to make one!

Nice and simple, just the way I like it!

Very nice!