Well I've built me an acrylic box for a fuge... I have two maxi 600's to go in and out of the fuge.
Problem is, even tho the tubing is equa-distant and pumps are the same (and clean), the fuge slowly looses water level to the sump..
both ph's are mounted at the same height, so I don't understand why this isn't working right.
(it's in a mock up scenario atm, so no danger for flooding or contamination etc)
edit to add relevant info -
I have a 90g with built in overflow, and a megaflow (older model) sump with bioballs.
I'm already planning on changing ot the bio balls with rubble (altho I have advanced balls <snicker> that include carbon abd cermaic so they arn't just nitrate traps). the older model mega has some serious space constraints or I'd use it as the fuge.. just isn't possible with the 1200gph return and skimmer I have.. so... add on fuge..
I can always buy a hang on fuge, but I prefer to use the materials I have on hand if at all possible, since I already paid for em.