Do I need to increase my flow?

aklausing

Member
I think I need more flow in my nano. I'm considering either purchasing a Koralia 1 or 2 or really forking out the dough to purchase a Vortech MP10.

My current set-up is a JBJ 28G Nano Cube. I replaced one of the factory return pumps with a Maxi-Jet 1200 and added a Koralia Nano Powerhead to the display.

Pumps are rated at:
266 GPH for the factory return pump
295 GPH for the MJ1200
240 GPH for the Koralia Nano


Contents include:
- ~35# live rock
- ~10# live sand (1" in front trailing off to none at back)
- Hammer with about 15-20 heads
- Candy Cane frag
- 10-15 Mushrooms
- 3-4 Ricordea Polyps
- Toadstool leather
- 2 branches of Lemnellia
- pair of Ocelaris
- scooter blenny
- ruby striped goby
- sally light foot crab
- emerald crab
- 3 small hermit crabs
- 2 peppermint shrimps
- various snails (nassareus, margharita, astrea)

I do a 10-15% water change every week and seem to have a lot of detrius on the rocks that I have to blast with a turkey baster each time I do the water change. I also have green algae on the rocks, along with coraline. I have 0 nitrates, nitrites and ammonia. I dose to reach a calcium level of 380-400 ppm and alkaline of ~12 dKH.

While I can see the corals sway somewhat in the flow, it looks nothing like I see at Reef Systems and Phishy with their tanks. The corals look healthy and I have had no die off, but I am not getting the growth nor the extension I think i should be seeing

I'd like to add some more corals like some frogspawn, zoas and not sure what else.

I'm thinking of putting the K-Nano towards the back of the tank (currently in front side) and adding another power head on the opposite side. I like the idea of the MP10, since it is small inside the tank. It also allows me to adjust the flow easily and has a great wave action, from what I've been reading.

I'm attaching a picture, but since this picture I have moved the K-Nano more toward the front corner.

Anyway, please give me your thoughts on more flow, how much, vortech vs koralia.
 

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I would say your tank would be fine with the addition of a Koralia# 1 or 2. I hate to say it but the Koralia Nano's put out very little flow.
 
Thanks Shark Keeper. I read that article, but guess I breezed right over the 138 degree comment. The author indicated the increase in temperature really didn't have any impact on water temperature. Also, he didn't mention, although it might have been implied, if the temperture stayed at 138 or just spiked to it. I guess either way, that would be a concern.

Haggarse I agree, the K-nano really doesn't have much flow, which leads me to think the koralia 1 will end up not having the flow I want either. But then the Koralia 2 is almost twice the size of the nano and I really don't want that big of a head in the display tank.

Anyone else have any thoughts on how much more flow I should have?

Is it possible the green film algae on the rocks is because I don't have enough flow?
 
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