[marciemp]

I have 3 powerheads in my tank for water movement. A couple of weeks ago I found a Chromis sucked to the intake dead, I thought he probably died and then got sucked in. Then a few days ago I found a shrimp sucked to a different powerhead, he was really stuck to it. The Chromis were new and we lost all of them but the shrimp have been in the tank for a while and were all doing very well. I notice the shrimp swim around the tank alot at night and I worry that more will be sucked in. Tonight I noticed 3 peppermint shrimp hanging out on the powerhead, which worried me, and our tiny red starfish keeps finding it's way onto the glass, and i worry about her getting sucked in too (All of the rocks are away from the glass so I have no idea how she gets on, I guess across the sand, or by reaching very far). I also notice occasionally a snail will be on a powerhead near the intake, so i worry about them too.

The powerheads are set up so the water flows out the bottom, and they all have guards on the bottoms, but I realised after I had to pick the shrimp off the powerhead that the water sucks in around the "neck" of the powerhead, and that the suction is quite strong, strong enough to suck an unsuspecting creature to it and kill it. I do have them set on the highest flow, should I turn them down? Why don't they intakes have guards? Am I doing something wrong?

Thanks,
Marcie