10,000k Causing algae? - The Planted Tank Forum
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post #1 of 5 (permalink) Old 02-17-2004, 03:25 PM Thread Starter
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I replaced one of my 6,500K bulbs with a 10,000K bulb and my tank has gone down hill. The funny thing is that all the plants on the remaining 6,500K bulb side are doing o.k., but the ones on the 10,000K side are covered with algae. Has anyone had problems using the 10,000K bulbs?
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post #2 of 5 (permalink) Old 02-17-2004, 03:28 PM
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What else is going on in your tank? Params, fish amount, feeedings, plants, nutrients, co2, macro, micros, set up...any new additions, external, internal...eggplant
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post #3 of 5 (permalink) Old 02-17-2004, 04:14 PM
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I am using 10000K T5 bulbs mixed with a 5000K T8 and a plant grow T8 bulb. No problems with algae when I started using the 10kK bulbs.
The color temp doesn't say much about the spectrum though, so yours might be different. I got lots of algae growth with lower K temps, like 3200K compact fluorescents.
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post #4 of 5 (permalink) Old 02-17-2004, 07:17 PM
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I ran four 10000K bulbs with no problem.

Your algae outbreak may be from something else. Think along the lines of Fat Guy, I think you will find your answer.


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post #5 of 5 (permalink) Old 02-17-2004, 07:36 PM
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I think it's a simple case (diagnostically, at least) of the tank being thrown off-balance. New light with increased intensity and different spectrum will do that to ya. I've even had algae noticeably develop after replacing a light with the same light, and have also had it work in reverse where algae develops more as the bulb(s) ages. You may have to up your fertilizing regimen for a little while until you regain balance.
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