Greetings, I have a 4.5 month old 25 gallon (long) salt water tank. I am concerned about this fine layer of white/opaque bristles which is currently growing on my LR as well as a few of my hermits. After doing some reading I found that it could possibly be hydroids. Are Hydroids bad for...

I already have two clowns, two firefish in my 30 gallon tank. I'm really eager to get either a coral beauty, cherub angel, or a flame angel (suggestions?). I'm also thinking of purchasing a royal gramma and a green mandarin on top of that. I'm aware it would be a little overpopulated but ill do...

i keep reading about how we should never use tap water for water changes, or even to clean out our mechanical filter media. is there something wrong with the de-chlorinating chemicals for treating tap water? which is a better purchase, R/O filter or UV sterilizer? i cant seem to get a clear...