increasing water flow in my 90gal
 

i have an clarity plus 90 gal rr and want to increase my turn over. unfortunately it only has one hole in the overflow box. are there any suggestion for increasing the flow. i tryed a larger return pump however it made short work of the water in my sump and just filled my overflow box quickly. all suggestion are welcome

Welcome to RC!!
Why don't you just use some power heads?
I like the koralias.

Two of the Koralia #4s would be a great idea. I use them in my 150 gallon reef.

2x koralia 4s

First, you return will only be able to handle 600GPH. Get a pump that will handle that, plus any headloss. The flow in your main tank will be terermined on what your keeeping. FOLR 20x is a good starting point. LPS 30x. SPS above 40x. This flow will be created by power heads.

I have a 90 gallon mixed reef. I have a mag 9.5 with a ball valve for the return and mag 9.5 for a closed loop. I just added a maxijet 1200 for a little extra flow. everything is doing great. I dont like the maxijet but i had it hanging around- koralia is the way to go.

thank you all. I will indeed try the power heads, i just didnt want to see them hanging around or have any fish sucked in to the inlets.

Try using eductors. I use two on my closed loop in my 75gal. and it gives me more than enough flow in the tank with only using a mag 5 for my return from the sump. If you do a search or just look around a little there are a couple of threads on these. They are very easy and cheap to make and require no powerheads. Many people attach them to their return line. Sorry I do not have the link, I will see if I can find it

forgot to mention that my closed loop is run by a quiet one 1000 with a 1" line reduced to 3/4" for scqwd. I have plans and parts to put together a complete pvc scqwd.