07-09-2012, 04:33 PM
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Originally Posted by jennesque
Alright.. I've been trying to deny it so far, but it's gotten to the point it's just too obvious to me.. I'm starting to get an algae problem. I noticed before increasing the GH so I think it's just an issue of too much lighting. I've been looking up about algae.. I've got green spotted algae on the pennywort leaves.. haven't noticed it on any other plants. I also think there may be some algae on the roots but I'm not sure.. there is green dust algae on the glass of one side of my tank which covers an area less than the size of my hand.. I've also got what I think is bba on my driftwood.. it's growing in dark little tufts off the driftwood. I'm not sure if I should be concerned about any of these. I should have additional floating plants in by Wednesday which will obviously cut down on the light as they grow in. Should I just wait to see what happens?
I've currently got the 3 CFLs at 13 watts each.. the middle light is somewhat blocked by the support beam in the middle of the tank though. I can double check but I think the lights are on 9 hours, but with a 3-4 hour siesta mid day. This can be changed as needed...
I don't really care about algae on my driftwood.. as long as the tank is healthy. I don't really want green glass though. And I don't want to kill off any plants. The floating plants will replace the pennywort so as of right now I think the main worry is the green dust on the glass. I've also read BBA is caused by CO2 imbalance.. but I'm not planning on adding CO2 so I'm guessing I need to limit something else.
Posted via Mobile Device
While it is true that various species of algae can be prone to some factor or other (like the CO2), there is still the overlying fact that all algae increases due to light. This can be as simple as the increase in daylight (intensity and longer hours) during summer. It is easy to control light, and nothing else will suffer by a reduction in duration; but messing around with increased CO2 or faster water flow or...whatever, is risky.
In a natural system we are relying more on nature and the balance of all this stuff is critical. Any slight adjustment to one factor can set off repercussions across the balance. Consider the ambient room light issue, and/or reduce the duration by an hour if you think it needs it--only you can be the judge of the algae increase. My wood is covered in brush algae, which provides a nice grazing biofilm for fish. It is only when it begins to appear on plants that i take action.