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Old 10-15-2008, 05:26 PM   #1
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Why do Diatoms like my tank so much?

Instead of nice growths of coraline algae (tank is at the 2.5 month mark now), I am now getting my 2nd outbreak of brown algae, and the purplish snot like algae is a constant. I'm also getting quite a bit of green, short string algae.

None of my clean up crew is eating it (I don't blame them), so I've cut feeding amounts down, and to once a day, and I'm going to try a week of 5-6 hour of light, that's it. This is on top of my water changes with steam distilled water.

Anyone have any other tips for me...to encourage the good coraline algae and not the diatoms?
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Old 10-15-2008, 06:16 PM   #2
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Brown algae, cyano, diatoms...all from high nutrients-nitrates, phosphates, silicates.

Steam distilled water must be expensive to make/buy. Did you originally fill your tank with this water? I would suggest getting yourself a RO/DI unit. They run around $100 and are well worth the money.

I suggest you keep up with the water changes, 20-30% every week. Also get some GFO and a reactor to run it in to help remove the phosphate and silicate.
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Old 10-15-2008, 06:45 PM   #3
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What does your cleanup crew consist of? Any snails? How many and what kind?
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Old 10-16-2008, 02:31 AM   #4
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Unfortunately i originally filled the tank with tap water...which is why I'm using the steam distilled to do my water changes with. I agree...I was on ebay looking at RO/DI filters...but I'm not sure what is a "good" one.

My CUC has 9 nassaria snails, and 2 ceriths. Any suggestions for other or more snails?

I'll post my chem levels friday when I'm done midnights (Friday)...
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Old 10-16-2008, 07:54 AM   #5
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Oh, and my total CUC right now has 5 blue legged hermit crabs, a brittle starfish, a peppermint shrimp on top of the afore mentioned snails.

The 18L "jugs" of steam distilled water are costing me $5.00 a shot, and they don't last long, so I'll definately have to get my own RO/DI filter.
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Old 10-16-2008, 08:14 AM   #6
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This is the one that I have. It`s a little pricey but it showes what you need anyway. They sell pretty cheap at Ebay.

Reverse Osmosis Aquarium Water Quality: Maxxima RO/DI Units
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Old 10-16-2008, 09:32 AM   #7
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Have you measured the phosphates from your tap?
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Old 10-16-2008, 04:07 PM   #8
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My CUC has 9 nassaria snails, and 2 ceriths. Any suggestions for other or more snails?
For a 55g... yeah - definitely more snails.

I'd put in easily 10 astrea and 10 trochus, or some combination of the two type. Or just 20 astrea if that's all you can get. Trochus seem hard to get right now for some reason. The astrea and trochus will have a feast on the diatoms.

I'd also put another 10 nassarius snails in there for good measure.
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Old 10-16-2008, 05:09 PM   #9
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I know mines FW, just wanted to add that ~ last month is when diatoms finally went away for me in my 10G that I setup the 5th of March.

My 55G(again FW) I still have them and it was a used tank.

Maybe its just my tap water?
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Old 10-16-2008, 11:50 PM   #10
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I just added 10 more small nassis and 5 large ones to my 55. I like ceriths and margaritas as well.
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