Yes I think the problem with leaks might be too big of a pump?
I'm using a 396gph, whats everyone else got?
Not your pump as I have the same one in a 18 gal rubbermaid tub.
I like these threads as I find new ideas for future builds. Every time I need clones I seem to redesign my cloner. ( I have way to much cloner parts lol my Home Depot switched PCV fitting suppliers and all the fitting were 10c each)
I cut the foam collars in half so I can expose more root. I also put the foam in cut off net pots. Easier to check for roots.
I really believe your problem could be fixed with switching your nozzles to the 90°/180° sprayers. I found they work much better than the 360° unless they are in a centre row.
I checked my local hydro store and they wanted 99c each for them. I figured I needed 25 so I went on ebay and bout $15 worth of sprayers I have 4 different kinds and more than I can ever use lol.
These are the best ones imo the 90°/180° from this guy
https://www.ebay.ca/itm/100x-EZ-Clone-Sprayer-Nozzle-Jet-Mister-Cloning-Machine-Hydroponic-90-180-360-/141893185169?var=&hash=item66aec13bae
Some pics of my previous versions
New one will have 360 sprayers in the center 180 on the sides and 90's in the corners
The 2" hole saw bit I bought off of ebay was less than $3
the top I had leaking problems too but I fixed it and put a tray under it.
and now with roots
Tips I found helpful for myself.
Water changes. I find it's easier it's easier to just swap in a clean bin. I just pick up lid, pump and air stones. place it on the new clean bin. Take the manifold and clean the nozzles put back together and fill. Empty and clean the old reservoir. It's ready for the next water change. I change my water ever 7-10 days.
I found my water temp was getting too high so I put my pump on an on/off timer 42 on /30 min off (Cheap Woods digital timer with only 20 settings). I also added a air pump and two 8" long air stones along the side walls.
So my advice to the OP @
Hydrowannabe
Try some different sprayer nozzles, also as someone said maybe redesign your manifold. I might lower it too.
My next build is going to use your same size tub, I'm just waiting for some parts.
Cheers
CCG
My very first cloner