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I am new to corals. I have a 38-gallon under a 175-watt MH. 2 days ago I put a new 14k bulb in my tank. I also added a toadstool leather. Yesterday he was fine. This morning he is closed up and droping. I noticed some yellow-green spots with brown tips on him. Have I bleached him? How...

A large clown, 2 damsels, cleaner shrimp, live rock, and a toadstool leather are the creatures within.

I like to let it build up and run down the back of my tank. It forms some interesting sculptures!!

That is my lighting... also the tank is a 38-gallon, 36 x 12 x 24 Thanks for any help!!

I just got a new 175w MH 14k bulb...being kinda new to this, what is the best way to break in the bulb so I don't bleach anything?

What do you guys think about putting a small purple lobster in a tank? Would I have any trouble with it aggitating other tank mates? ( I have a clown, yellow tang, 2 damsels, cleaner shrimp, and cucumber) Thanks

I have a 2-3 year old Cin. Clown, I just put him in the tank about 3 weeks ago, but everyday I see him whipping his tail in my sandbed. He has moved quite a bit of the sand around. I think he might just be carving out his place in the tank but I don't know for sure. Any ideas?

Has anyone used these? How good are they? What kind of bulb do you guys recommend? I have a 38-gallon tank and a 175w MH light. I only have live rock and a couple of damsels...but will be adding corals soon.

If my 38-gallon is too small for tangs, what fish will do well in it? I have some live rock.

Could I put a blue hippo tang in a 38-gallon with a sailfin tang? They would be the only 2 fish in the tank right now with a starfish and cleaner shrimp.

Thanks

I am trying to get a general idea of how many "K" a bulb I could get at Home Depot might have. I have a 175w MH fixture, but since most bulbs only have wattage and lumens on them, I don't know how strong the bulb is. Can someone give me a formula for converting what I have into "K" or give me...

The bulb is a 90w. The fixture is 175w. I'm trying to get a feel for what the amount of lumens is generally in K or how I can figure that out.

I have a 38-gallon tank with a MH. My question is about the bulbs. How can a figure out how many "k" a bulb is if I only know that it is a 90w, 120v, with a light out put of 1280 lumens. I think there is some formula for figuring this out. If anyone can help me with this I would appreciate...