Frag plugs and eggcrate likely contain phosphates...or something else that seems to be a spot that algae likes to grow. I had this issue with racks and plugs when I've had them in my display.
Frag plugs and eggcrate likely contain phosphates...or something else that seems to be a spot that algae likes to grow. I had this issue with racks and plugs when I've had them in my display.
What are you using? Just rocks on the sand or bottom?
eshopps mag frag racks for right now, untill i can get money to get a blue glow.
My guess is that "plastic" in general has phosphates in some usable form and algae finds it.
If that is true, and it is unstable, then it would leach into the water column and affect the entire system and the algae would prolifertae in both tanks. Just a thought.
Please stop fragging your frags.......you'll eventually do more damage than good. Just let them grow.
I would be very interested in seeing a picture of the algae. I would suspect that what you have is Bryopsis and none of the above information although well intended will cure the problem. Bryopsis is often mistaken for hair algae and is the most common found growing on plugs in frag tanks such as yours. Especially in the event it is growing in your frag tank only. Bryopsis can grow at very low nutrient level so starving it out can be very difficult. However there is a simple and easy fool proof method for eliminating it. Please post a pic of the algae and we can cure your problem quite quickly, easily and with very little expense.
It is also worth noting that if your using ceramic frag plugs they are not the problem. They simply provide a suitable substrate for the algae to adhere to. Live rock would also provide the same suitable substrate. The acrylic racks are not the problem either. Some agrocrete plugs may cause issues but that is another discussion.
Bryopsis has a "feathery" appearance while Green Hair Algae has a "hairy" appearance. Raising you magnesium levels to 1500ppm with Kent Tech M magnesium supplement will eliminate bryopsis very quickly. The bryopsis will simply die off. You can then return the mag level back to 1250-1280. Once eliminated the bryopsis will not come back unless you reintroduce it.
If it is truly hair algae then you must eliminate phosphate. I seriously doubt this is the problem due to the fact the algae doesn't occur in the display. A phosphate test kit is useless in the case of hair algae also due to the fact that the algae will bind the PO4 and make it undectable for a hobby grade test kit.
Forgot to ask you, how long ago did the bloom began?
Changing those bulbs won't hurt regardless of your issue, just be sure to change one at a time.
If you can, I'd grab that book I mentioned.
If indeed you do have Bryopsis, you will also possibly have elevated levels of Ammonia and Nitrites. Have you checked those levels? If the main is a mature system, you shouldn't have these high readings.
According to J. Sprung, this type of algae is not highly palatable for most herbivore fish, with the exception of maybe the Rabbitfish. It is however palatable for Diadema and Tuxedo Urchins, Sea Slugs and Mithraculus crabs. He also recommend strong biological filtration which will deter it's growth.
Good luck with whatever you do and I'm sure it will work out for you.
Mucho Reef
Please stop fragging your frags.......you'll eventually do more damage than good. Just let them grow.