gigmeyer
Fish Fanatic
I bought a small zoanthid colony last April that grew out of control up until the September/October timeframe. Right around that time, I was considering having to find a way to control its growth to prevent it from taking over the tank. Since that time, it has been slowly receding and I'm concerned it will disappear altogether within the next few months. The polyps that remain all appear healthy and all my other corals are very healthy as well.
One change during that timeframe was lowering the photo period from 8.5 hours to around 7 hours as hair algae has been an ongoing problem. I've also been dosing with Magnesium (Kent's Tech-M), but have backed off on it significantly over the last few months as the hair algae is now very manageable.
Today I'm increasing the photo period from 7 to 8 hours to see if that helps the zoanthids without causing a hair algae problem. The light is a Sunpod 150 HQI with the original bulb that is about 14 months old.
Has anyone experienced this problem or have other suggestions on what might be the cause?
Thanks
One change during that timeframe was lowering the photo period from 8.5 hours to around 7 hours as hair algae has been an ongoing problem. I've also been dosing with Magnesium (Kent's Tech-M), but have backed off on it significantly over the last few months as the hair algae is now very manageable.
Today I'm increasing the photo period from 7 to 8 hours to see if that helps the zoanthids without causing a hair algae problem. The light is a Sunpod 150 HQI with the original bulb that is about 14 months old.
Has anyone experienced this problem or have other suggestions on what might be the cause?
Thanks