This is exactly what I'm hoping for. I replaced everything but the membrane in mine a few months ago. I tested when the algae started going crazy and I had 14 tds.
I replaced everything again last week. Hopefully it all clears up now.
I've built all of mine with aqualifter pumps and cheap float switches wired into an extension cord. If you don't mind the diy look, it takes about 10 minutes and 25$.
Is that going to be your only source of flow? When I had my 10 set up, I had an aquaclear 70, and a koralia nano 425. It was pretty perfect.
If you have no other flow, two is probably a good bet though.
Zoas can be finicky little turds. I have a few colonies that will close up for a week at a time, then open back up like nothing happened.
Fruit loops are a little more touchy than most. Mine looked great one day, then didn't open one morning and melted pretty quick.
Okay... I've been doing 5 gallon water changes every 3-4 days. I still have algae growth, except now it's more of a red/brown color.
Good sign? Bad sign? Impending doom!?