How much flow - what works for you?

I had the same issue as you with a biocube 14, it was filled with mostly softies though, and a few LPS. Funny though, because I had the same exact set up, mj900, hydor, koralia nano. Then for a while a ran an aqua pod 12 with a fairly open scape. I ran a mj900 with a home made spray bar, and the previously mentioned nano on that with no problems. This was bare bottom. I think it comes down to placement of corals in small tanks like that.

Now I run two modded mj900's that used to be in the above tanks with a mag drive 9.5 going to a sqwd, in about 100 gallons of water. It's bare bottom so I still don't think its enough.

I'd love to run some sort of wave maker, or at the very least have more random flow, but it's expensive.

 

i'm running 2 Seio M1500's and a maxi1200 with mod on my 125. I am still playing with placement of the power heads cause it seems that no matter where they are i am blowing sand away from the bed and going down to the glass. they aren't even pointed down, just mounted to back of the tank blowing forward at about a 45 degree angle. the maxi is blowing strait across the front panel. I tend to rotate which PH's are on by just unplugging one here and there. I was running a cheap JBJ wave maker on the seios but they made an awful noise so thats no longer and i think i'll opt for controllable PH's if i go for a wavemaker again. I dont have much coral in the tank yet but what little i do seem to move quite a bit. I notice it most in my AOG's since they are the only taller softies i have.

 

I also have an ap12 and run a mj1200 for return with a k-nano also, All the coral i have seems to like the flow, or at least don't mind it. Once a week or more i have to re-locate the k-nano because my 2 year old pulls the magnet off and it's hangin in the tank blowing everywhere. I also have to run the nano on the side pointing at the opposite corner or i have a sand storm and have problems with coral.