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Old 11-23-2014, 05:50 PM   #1
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Water current

I have a 10 gallon tank with about a 6 think stem plants and the rest is moss. I have about a 12 dwarf crayfish. I was wondering how strong a current I should have in my tank. My sunsun 603b puts out a very weak current. So I added a 60 gph pump and closed it about half. The crayfish seen fine. My question is can a good current help reduce algae growth?
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Old 11-23-2014, 06:21 PM   #2
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Water current doesn't affect algae growth, it about the plants outcompeting algae for nutrients and light.
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Old 11-23-2014, 06:35 PM   #3
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Current helps in keeping diatoms from getting a foothold but as far as algea that can grow in no current to a strong flow and anywhere in between
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Old 11-24-2014, 01:20 AM   #4
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Some types of algae thrive in strong current.
Other types only grow well in slowly moving water.
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Old 11-24-2014, 06:21 PM   #5
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I've had algae grow in front of my power heads lol. I've been convinced current does not affect algae . .
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Old 11-24-2014, 09:30 PM   #6
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Good flow delivers CO2 and nutrients to plants, and healthy vigorous growing plants deter algae. In this sense, good flow definitely works towards an algae free tank, right up there in importance with control of light/nutrients. However, it doesn't correct nutrient dosing or CO2 issues if they're present. Many more difficult plants won't strive in dead spots of tanks. Makes a bigger impact on fast/high-light tanks

In this tank; the flow is very biased towards the left side... both the downoi and backtground stems on the left are doing much better than the right side of the large rock, even the HC grows a bit faster on the left. No other parameter difference otherwise
Regards, Dennis
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