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I recently installed a second hk 3 powerhead to my 45 gallon tall tank. So, now I have two hooked up. Do I have to much flow? Just by looking at the water movement, I feel like I may have over done it. What corals thrive in such an enviroment? Which ones don't?
Thought I would mention how I have them set up right now. One is the back left corner shooting straight across to the back right. The other is in the middle of the right side of the tank aimed slightly towards the front window pane. So they are both aimed towards the middle of the tank, but one is in the back, and the other is closer to the front. I would provide a pic, but the second hk 3 stared a mini sand storm and visibility is low.
the ideal thing is to have no dead spots while not creating a sand storm.
when i had a 46 gallon tank ( with 40 breeder sump ) i had alittle less then 3,000 gph.
I don't think that you can have too much flow in a reef enviroment. Some animals will prefer less flow than others, but two HK 3's will be fine. Here's a little bit of reading to give you an idea about flow.
Reef Aquarium Flow
i think you can have to much if it gets to sand storms, blowing frag plugs around, fish having a hard time swimming and getting blown out of the water :wink: lol
... but your far from that.
My Clowns LOVED swimming against the current of my HK 3 when the 46 was set up. I had a HK 3, a HK 2 and my return pump doing 700 GPH before 4 ft of head.
I think that once you get your corals set up in the tank, you'll get a good idea of what kind of flow you want to accomplish. Just make sure there are no dead spots.
Okay. It only caused a mini sand storm because of debris left over on the rock. Its clearing up a lot now, and I think I like it. I have nice surface agitation going on while mainting flow all over the tank :). The real test, like stated above, will be when I place corals in there !!!
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