Waterflow

[DaveM]

I have a 90 reef tank and was wondering the best way to setup my waterflow in the tank. Right now I seem to have a problem with coral growth and some are even dying off.

 

[neilanh]

Can you tell us a bit about your setup?

How much flow do you have right now and how is it implemented?
What type of corals are having issues?

 

[DaveM]

Well the setup is a standard 48" long 90 gallon. I have 2- koralia 1 in the tank blowing from front towards the back middle. I also have a small powerhead breaking the surface of water for air and shimmer effect. I currently have power compact light. 6 bulbs by 65 watts and unfortunately they are 50/50 bulbs. I am waiting for arrival of better bulbs. As for corals I just have simple stuff like zoos and mushrooms. I can't get Xenia to stay healthy or my zoos. But my hammer and frogspawn do perfectly fine. Hopefully I worded this ok

 

[DaveM]

Here are some pics

 

[cmor1701d]

How long has it been up and running with fish?
What is the filtration both mechanical and biological?
What else is in the tank (livestock and equipment)?
What are your water parameters?
Ammonia, nitrite, nitrate, phosphate, calcium, alkalinity, magnesium, SG?
Please post actual numbers and which test kit(s) you are using to get those numbers.

How often are you doing PWC's and how much is changed each time?