Spraybar under the surface and angled up?
Absolutely......I have one like that. It gives immense water surface agitation and it's quiet too. I think you and your roomates might appreciate the lack of waterfall noises
What happened with my tank was a three-fold whammy. I believe (from their fuzzy appearance) that two of my Tiger Barbs died, hidden in the thick growth of ferns on the bogwood.
The filter (there's two) that has its spraybar agitating the water surface suddenly clogged and the flow dropped right off.
There's an Aquaclear 500 HOB filter on the tank and a load of plant depris got stuck in the intake and knocked THAT flow right down.
This all happened overnight. So I wake up in the morning to find a severely depleted O2 level, nitrates that registered at 250 mg/L
after a 60% water change. Lord knows what they were before.
I lost 3 Clowns and 10 Tiger Barbs in total. I cleaned the two filters and added a positive air feed to one of the powerheads also in the tank. It blasts out a stream of bubbles now. That night I did another 40% water-change.
Everything was all good pretty quickly. You have to move QUICK in a situation like that.
Your 55 is good for a while until the Clowns grow some. Might not be a bad idea to add a powerhead for a bit more water movement and let the spraybar keep that surface gaseous exchange going.
Here's a paste over from the old LOL forum of the setup of my tank (Dated 20th October 2005):
Thought I would show you all some pics of the 6 foot tank in its new home and how I've set it up in preparation for moving the Clowns and
kubotai over.
First, I put in a River-Tank manifold. Two powerheads, two sponge intakes.
Then in went some sand mixed with Latterite that had been in another tank before, then a lot of the unwashed sand that had been in the 6 footer before I moved it. The plants came from the 6 footer before, plus all the Microsoreum pterops (Windelov) are growing on driftwood and came from the Clown's present 120 gallon home.
I moved over 3 old
Corydoras aneus from the 120 and they're having a whale of a time with a 6 foot swimming length, plus they LOVE the sand.
Here's a somewhat still cloudy, but moody nightime shot. The view from the couch.
Here's the cleared tank this morning.
Once the plants reposition themselves and start to get established, it will look even better.
Temperature is holding nicely at 83.5 and there's a gentle right to left current which will get stronger once I hook up the second Rena Filstar to the lower mounted spraybar. If I decide to add flow, I'll just switch to bigger powerheads on the R-T manifold.
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If you look at that last picture, you can see where the spraybars from the two Rena XP3 filters are mounted at the right end of the tank. One high for surface agitation, one low for current.
Martin.