rocks>>> not much coraline but some green/gray algae instead?

[whitefang]

A big hello to all the reefers here,

my rocks have been in the tank for quite some time. some about 1 mth, others abt 2 mths. i have been dosing regularly some "CoralUp" and i have yet to see any difference in coraline growth.

In fact, when the lights are off, with a little lighting from my celiling light, it looks like there are more green/gray fluffly stuff on the rocks (the parts that are not purple). Why is this? Is this another kind of algae? Is this normal?

I've been getting a lot of tiny snails, though! Why is that?

The tank residents:
1 x blue legged hermit
1 x turbo snail
1 x mandarin
1 x scooter blenny
1 x fire goby
2 x false perculas
2 x feather dusters
1 x sand dollar

equipment:
- 1 and 1/2 ft glass tank
- dolphin c-500 canister filter
- 24W PL light (one white tube, and one blue tube), abt 1 ft in length.
- boyu hang-on protein skimmer
- 1 to 1 and 1/2 inch sandbed. no rubble or luka shells.

water testing:
results are within range for carbonate hardness, pH, NO2 and NO3, phosphate, and ammonia too.

pls advise!

P/S: just a guess, but do u think that some of the corals are not doing well, maybe dying, as such, causing the 'algae' growth?

[anfieldmad]

Too much sun???

[Leonisation]

I think those are hair algae. Use a FR and upgrade your skimmer. That should solve the problem. I have a good hang-on skimmer..... if you are interested... 81182380

[Blades]

What's your mg level?