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Then is there any other ways to see if the DSB is working or not? :?:

Oh... but I thought that in order to removes NO3, there is a kind of bacteria at the bottom of the DSB and bubbles would be seen? Or did I misread the article? :o

Thanks steve, how long should I wait in order to see bubbles occurs in the bottom of the sand?

I plan to set up a deep sand bed, have a 9 kg live sand and a 20 kg normal sand grade 0, the normal comes in 10 kg a packet. My question is, where should I place the live sand? At the bottom, then normal sand on top, or at the middle with both normal sand below and on top, or should I place the...

It could be a mantis shrimp. A troublemaker indeed, remove it as soon as possible if its really is a mantis shrimp. :D

Are T5 lights able to support cocrea clams? (the light hood is 2 x 24 wattage T5 bulbs, 2 feet tank)

I think I'm just being paranoid. Its ok today, no more peeling sign. And no scar. Do they changes their colour of gills suddenly? Maybe its just that. Hmm so confuse abt angels. :?:

My flame angel have been doing well for months, but today, its skin seems to be some peeling, not a lot, but its quite visible. What causes it? I don't have a pic. My water specs are ok. And I feed them with different things everyday, mussles, blood worms, mysis/brine shrimp, plankton, flakes...

Wow thanks reef, luckily I did'nt bought it. :mrgreen:

My friend started dripping kalkwasser few months ago, and he find out that there is a purple slug suddenly in his tank. Where does all this stuff like snails/slugs come out from after dripping kalk? Is it LR? And what is the purpose of coraline algae? Just for adding beauty to the tank or there...

Do purple slugs (I don't know its name, but its purple in colour, like a shape of a small boat) prey on sponge? I have a purple sponge in my tank, is it advisable to add a slug?

Oh then I shell give up the idea of getting another angel. :D I'll get the high fin cardinal then, instead of the bi-colour. Thanks guys. :D

One of my fluorecent green mushroom (disc anemone) moves away from its own LR (there are lots of them on the LR, but only this moves) and drop on the sand. It grows there and seems to love it, but why did they moves? My water specs are alright. And light level is also adequate. But there is...

My flame angel ate nori, just not as much as tang does, but it did dash for it when I clip the nori in. I tried red ones, they don't seems to like it, but they loves the green ones. :D

But broccoli are rather hard, are the tangs able to break it?

How does a snail's eggs looks like? Do snails need to have a mate in order to lay eggs?

My purple sponge have some peeling, why did this happens? Is it because it was contacted to air? But I did try my best to reduce the time it contacted to air to a minimum when I transfer it from the bag to the tank. And do they need light?

Hmm, so one last question, should the water be warm or the same temp as the tank water when it flows out from the uv sterilizer? Mine is the same temp as the tank water. And should the water that comes out from the uv fast, moderate or very slow? Mine is like normal filtration speed. Because...

Would a dwarf flame angel and a dwarf bi-colour angel be compatible if housing in a 40 gal community reef tank? The flame angel is already in the tank.

So would 180 gal per hour kill parasites? Or is the water flows too fast? The water did not get heated up at this flows rate. BTW my 180 gal per hour means the powerhead 's full speed is 180 gal per hour. I did'nt minus the tubing reduction speed. And I got a piece of paper inside the box...

Hmm is a 180 gallon per hour powerhead enough for the coralife turbo twist 3x? My bulb is a 9 watt PL compact fluorescent.

My cleaner shrimp sometimes were short too, it even left with two antennas and 3 legs on one side and 1 leg on another when I bought it. But after it molts, all were back. The antennas were longer, and became 6, and all legs were back, 3 here 3 there.

Hmm, could you explain this sentence for me please? Sorry I don't quite understand about saltcreep etc. :oops:

I had already fixed up all things for the sump, now the only thing is that how do I start the whole tank of water in the sump? Can I just mix salt and set to the same sg as the display tank and let the salt completely dissolved and start the sump? Or I have to go through the tedious cycle of NH3...

How do I feed a christmas tree? I just gave them liquid plankton now, is it enough? And how about its health? How to indicate its health? Mine is white in colour, I place it according to what the LFS owner told me, in a quiet corner, with or without lights is not important.