2 Diamond Watchman Gobies?

[lavoisier]

I have a 600g DT, 8' x4', and 1 Diamond Watchman Goby. Can I safely add another to help keep the sand clean? One cannot keep up.

I also have an assortment of snails and one fighting conch. I probably could add a couple more conchs?

 

[ichthyogeek]

You can, but just make sure you get a significantly smaller individual, preferably as small as possible!