Water Flow Question

dbeatty1954 · Dec 24, 2014

I have a Coralife Biocube 29 reef tank. I am having an issue with water flow. Initial I had 2 of the Hydor Koralia Nano 420 power heads on a Hydor controller. I am getting a lot of brown stuff in the live sand. Also a little red slime on the live rock. LFS says it is a flow problem. Suggested I try adding a Hydor Koralia Evo 600 to tank and move one of the 420's to push water across the back of the tank. When I put my hand in front of either the 420 or 600 I only feel water flow within about 2 inches of the power head. Admit I am just getting back into reef aquariums after being away for about 10 years. I would think I should feel more water movement further out from the power heads. Am I right or wrong. Any info proided will be appreciated.

brandon429 · Dec 25, 2014

Can you provide a link to a short cell video of your reef in full motion

There w be details in there we can use to help besides flow

dbeatty1954 · Dec 26, 2014

Took a short video with my phone but am unable to upload it. It is in MP4 format.

dbeatty1954 · Dec 26, 2014

Here you go, loaded it to youtube.[video=youtube_share;iQa-l676vs8]http://youtu.be/iQa-l676vs8[/video]

Initforaminute · Jan 5, 2015

One mp10 is perfect. That's what I had and it rocked that tank.

deznuttz4u · Jan 6, 2015

I forgot the calculations for flow the lfs mentioned.

I use a jebao wavemaker re-8 pulsing on and off at about 50% power with a 420 placed low in the back pushing across and have excellent flow in my cube. Two 420's definitely doesn't cut it.