iS IT TOO MUCH LIGHT? - The Planted Tank Forum
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post #1 of 5 (permalink) Old 01-15-2016, 04:45 PM Thread Starter
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I currently have a 39 watt and a 54 watt 6400 k T5H0 lamps over a 55 gallon no C02 Tank. I put the 39 watt in and my plants where not doing well so I added the 54. my plants are still not doing well and now I have BBA growing all over my plants and substrate. I don't have access to a par meter. Is it too much light?
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post #2 of 5 (permalink) Old 01-15-2016, 11:09 PM
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BBA almost always shows up when you don't have enough CO2 in the water for the amount of light you have, or when you don't keep the CO2 level the same every day during the photoperiod. In your case, since you aren't using CO2 you probably do have too much light. The amount of light you have depends on what light fixture you have the bulbs in. If it is a T5NO fixture you would have a lot less light than if it is a T5HO fixture, with good reflectors and a full power ballast.

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post #3 of 5 (permalink) Old 01-16-2016, 12:23 AM Thread Starter
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I just realizedI didn't say hat lights I was running. they are sunblaster fixture bulb and reflector
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post #4 of 5 (permalink) Old 01-17-2016, 09:07 AM
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Also would be helpful to know what kind of substrate you're using. Might be a lack of nutrients when your plants arent growing with just a 39W. The 54W addition is too much if you dont have enough plants and/or your plants don't have the nutrients available
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post #5 of 5 (permalink) Old 01-17-2016, 01:53 PM
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Originally Posted by maligne View Post
I have BBA growing all over my plants and substrate.
BBA on the substrate IMO is way too much light.
Typically BBA on older leaves that are near the surface in a high light tank.
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Swimming is not that difficult.
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