Last Wednesday I set up a new 66 gallon tank with live rock from Tampa Bay Salt water. The lighting on the tank is supplied by 235 watts of T5 10,000 K and atinic bulbs.
Over the last couple of day I have noticed all of the new rocks being covered by brown alge; it is even covering the few sponges that were on the new rock.
There is about 1/2 dozen snails and 1/2 dozen blue hermit crabs in the tank which are on the rocks but haven't been able to rid the rocks of the brown alge.
1st question: I thought most alge problems were green on new rocks and secondly, why the brown alge covering the new rocks and now some of the substrate. I have also shut off the light now. The rock was getting about 9 hours per day and then moon lighting for the rest of the day.
Any suggestions; thank you!
Over the last couple of day I have noticed all of the new rocks being covered by brown alge; it is even covering the few sponges that were on the new rock.
There is about 1/2 dozen snails and 1/2 dozen blue hermit crabs in the tank which are on the rocks but haven't been able to rid the rocks of the brown alge.
1st question: I thought most alge problems were green on new rocks and secondly, why the brown alge covering the new rocks and now some of the substrate. I have also shut off the light now. The rock was getting about 9 hours per day and then moon lighting for the rest of the day.
Any suggestions; thank you!