I have the same thing on my LR. It is just a harmless sponge. They are very beneficial to the uptake of nutrients in the system, thus they will help in maintaining better water quality.
I sent Sandy Cohen an email, she is the person responsible for writing article. Sandy emailed me back saying, "the experiment lasted 3 years, and the bulbs were still doing well at the end of it. SC"
This does pose a very good situation for low cost lighting. But still what happens to the...
I have been 'reef-n' off and on, currently I have been setup with a partial reef tank with very few corals as of right now ($$ is the main factor). It has been up since April 1999 and has seen its share of 'death' and 'sucess'. Currently I have had much of the later.
Tank: 75 gallon All Glass...
