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I'm setting up a new tank. 13.5 Fluval Evo. Finished a fishless cycle. Then put in a clown goby with a few crabs for two weeks, while monitoring everything. I decided to add a diamond goby. He's been digging like crazy which is what I was expecting, but the water is so cloudy now! The sand is neither fine, nor course so I don't think it's sand particles and I did give it a good rinsing before setting up my tank. Is this a bacterial bloom? Has he freed up trapped bacteria? The water was crystal clear right before I added him.

Hi Fellow Hobbyist, I'm new to the forum, and like to start by saying Hi to all~ I had a Diamond Goby that I bought at a local LFS about 2 min from my house, and brought it home. I temperature acclimated it for 1hr, and then put him in my tank. He seems to be doing fine, coming out during feeding time, moving sand bed from one side of tank to the other, grabbing hermit crabs with his mouth and moving them away from his new home (tunnel). However, after the third day, he didn't come out during feeding. Later in the afternoon, he was dead at the corner of my tank, with the crab feasting. I have a BioCube32, with stock lighting, PH=8.4, Ammonia, Nitrate, Nitrate all 0ppm, Salinity 1.025 (although LFS said they tested 1.021). I have a Blue Tang, 2 Clown Fishes, and Fire Shrimp as his tank mate, so nothing aggressive I can see. The only difference I can see that was different from Nemo/Dory acclimation was I only temp. acclimated, and did not drip acclimate. Do you think not drip acclimate a Diamond Goby could have killed after 3 days? Or could there possible be other reasons? I'm trying to figure out what might have cause his death, and hoping someone knowledgeable can guide me so I don't make the same mistake twice. Also, weird question, but would you feel bad taking back to the local LFS and asking for a refund? -Sango