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I'd like to start a temperate marine tank, and have no idea where to start. What are some dos and donts starting one. How does it differ from a tropical tank? I'd like to do this because I live near the coast in northern California and do lots of freediving/spearfishing/abalone diving, and I...

I have a Thermo Q submersible heater. I turned it on and when I came back I noticed my moray eel freaking out, a quick check of the water showed over 90 degrees. How do you work these things? It's just a tube with a little nob that doesn't really move. If this is the thermostat how do you set...

I found a couple of these small slug looking things on some base rock in my saltwater tank, I poked one and it started flashing bright neon colors?! What are these things?? The one I poked maybe had a shell, but it looked similiar to the pics of these other ones I took. I also found this...

I just got back from a week long vacation and noticed two things. First there is what appears to be mold growing above the water on the sides. Second there are hundreds of tiny red brown round bugs moving on the sides of the tank. Are these some sort of parasite, or just some type of zooplankton...

I finally got nitrite and nitrate liquid tests along with my ammonia. My readings were ammonia 0.25ppm Nitrite 0 ppm and Nitrate 60-80 ppm. I just did a 50% water change 2 days ago, and fed yesterday. The presence of Nitrate means it has cycled, correct? Is the ammonia just from feeding, and...

This morning I found a good sized crab on my indo. A few minutes ago I found this worm looking things on it. Can someone ID the worm thing, and are the crab or worm dangerous and need to be taken out?

Thinking of buying a device to make my own. What will it filter and what wont it filter? Will it have any effect on PH? Our well water is insanely alkaline and full of minerals in such, will it still work? How long does the filter last before needing to be replaced? Once that time hits do you...

I'm kind of worried. I just picked up two new snails earlier today and I noticed this coming out of one of them. Is it poop? Eggs? Or some sort of disease?

I just bought this LR. I know the things on the left are polyps (specific species anyone?). But are the things on the right anemones, or are they also polyps?

25gal 1 snowflake moray, 1 lion, + cleanup crew. 20 # LS 12 pounds LR. It's been 3 days since I fed and the ammonia is at .5ppm. I still see no nitritate or nitrite, but I am using the crap test strips. The guy at the LFS still swears that I may not see them at all in such a small tank, and if...

Is there any digital meters that read all the necessaties or do I have to buy a different meter for each thing being tested. Anyone have a link to what they use/prefer?

My snowflake moray is always hiding way up inside my 8 pound live rock. The only time I see him is when I dangle a piece of silverside his head pops out for a brief second. I thought he was just lodged so far in because it was a new tank and he would get used to it and come out more. I see...

I'm curious how to "seed" live rock. I have a 25gal with 1 8 pound live rock. I want to buy base rock because of my budget. How much should I buy? How do I seed it and how long will it take? How do you know it was succesful and it is now "live" (what visually makes it LR?)

I have a 25 gal tank with 1 dwarf lion, 1 snowflake moray, and a cleanup crew. There's 20 Lbs of live sand and 8 Lbs of live rock. When it "cycled" I saw the ammonia go up then down. But I never saw the nitrite or nitrate go up. It's been quite a while now, i've had ups and downs with ammonia...

Can I put snails and hermit crabs taken from the ocean in my tank? What about a sea urchin?

Hi. I have a 25 gal with 8 pounds of LR 20 pounds LS 1 dwarf lion , 1 snowflake moray, 7 hermits, 2 snails. The tank is a little over a month old. In my newbie mistake I had the lighting on for 18 hours a day, and it became disgusting. I bought some Excital red slime remover per the fish stores...

I've had this live rock for almost a month. When I got it there was one or two tiny hairs, and now they are growing into something that resembles grass. Can someone ID it for me please?

Are first I thought it was just a piece of plant fiber in my live sand. I just noticed it at the other end today, when I pulled it out it was intwined in a little piece of fish that didn't get eaten. I can't make out any segments, head or tail, and I never see it move. What is it and should I...

Hello. I've had a saltwater tank for almost a month now. 25 G . I have one dwarf lionfish, 2 snails and hermit crabs, and hope to get my snowflake moray soon. I have 20 pounds of live sand and 8 pounds of live rock.