That’s why you should really quarantine new fish. Not only for observation of disease but to reduce stress from shipping. It gives them time to regain strength so they can handle meeting new tank mates that might harass them at first, and just get use to you and their new surroundings.
His water quality is 0 nitites, about 30 nitrates, perfect PH, 0 amonia. Are there any other levels that would affect the crabs but not fish (they are fit as a fiddle) that we could check?
May want to check the salinity.
You do not need to remove your filter media, sponges or any thing else your using. You need to clean them from time to time. Rinse out your sponge in the water that you remove when you do water changes then place it back into your filter. It should be replaced with a new one about once a month...
I’ve heard about a couple of medicated products that might be safe for use with the mandarin fish but I still wouldn’t risk it. A much safer treatment would be hyposalinity. I would keep a close eye on him copper is not safe. Good luck
When the recommended amount is one pre tank, it usually means one per species, but you can usually have a male and female of any one given fish without problems.
6-line wrasse, would be a good fit but I've had one before and I had to give him away because he would kill anything I added to my tank after him.
If he's your last fish, which you said you were looking for one more. He would be a good fish to help with flatworms.
Yes that was a very good deal. Well you might need to learn more of the cameras functions but your doing a great job taking pictures of your beautiful reef tank in the mean time. :)
Actually, all your suggestions will help some but nothing that I know of will total eliminate the sand being kicked around. I know of others that were so fed up with having to uncover their rocks and coral that they traded their goby back to the lfs. So I guess you’ll have to experiment with it...