Wrong kind/ Too much flow?

[sixteengallon]

I have a 16 bow with mostly zoos and softies and about 12 lbs rock. I have 2 koralia 1's opposing eachother to create random flow, they are mounted about three inches below thew water line. Also on the tank is a small HOB filter for chem filtration and a Aqua-C Remora skimmer. All corals are doing well but I have noticed that my Kenya Tree (which is located about three inches below one of the koralias) every so often gets "blown over" partially by the flow but quickly returns to its normal stature. Recently, A friend who came over said this is way too much flow for this small of a tank. He said I should remove one if not both of the Koralias.

What is your guy's opinion?

 

[AZDesertRat]

I have a 16 bow with a single Koralia #1, a Rio 90 and a modified Aquaclear 500 refugium and the flow seems weak to me. I am adding a second #1 or swapping the #1 for a #2. I have a sarcophyton leather and it moves slightly but nothing drastic.

 

[Frick-n-Frags]

I have to say, watch how the animals react.

I have a pin leather and a couple pieces of corky fingers briarium positioned near the main PH stream and they get whipped by the turbulence. I wish I could film the colony of corky fingers. It's beautiful. they take some whippings heh, but they seem to love it.
edit: had to go look
my green sinularias like the gentle buffeting, but get PO'd when whipped, they mostly are way back around to the beginning end of the tank where the jet stream is gone, and just the gently turbulnet laminar flow is left, or behind rocks.


shrooms=totally PO'd getting whipped around mine will jump ship if it is too bright or windy and I find them happy as a clam in the dark behind the rocks.

more edit: I have a single monster PH in a 50 aimed to form a gyre. the whole tank is totally in motion and really the tough part is finding calmer areas for the shrooms. Other than that, everybody else likes the water swirling around.

BUT a coral right in the jet stream will get shredded or skinned.
i accidentally skinned a pocillapora. only the polyps were left on the windward damaged sides, it healed pretty fast, but that was still a number on it.

so I have to leave a clear channel all around for the jet stream. only the snails take it anything else will get wasted.
so, maybe take advantage of deflecting your streams off of things. I also stir the dust in the sump a little so I can see how the water is blowing around once in a while, especially after moving any rockwork

 

[awestruck]

I have a 58g. (36") and have 5 powerheads -- 3 mj and 2 koralias -- the other day I turned off 2 of the powerheads and my animals are looking better. Not getting blown around so much. But, it's mostly lps, shrooms, gorgonians, a clam, etc. Only a few sps.