DIY overflow help

[Nate_Krohn]

I have a 29 gallon reef tank already set up with HOB equipment that I would like to add a sump to. I can’t bring myself to spend over $100 on an hob overflow box so I thought I could make one out of pvc. Has anyone else done this? If you could share some tips with me that’d be great. Thanks!

 

[RocketEngineer]

Save yourself the time and effort and buy one :) Trust me, I built two different ones and neither worked as good as advertised. They are untrustworthy as they are prone to stop working and easily clogged.