I have a full grown snowflake in a 90g completely open top he has been in there for over a year and no problems at all. would I recommend it? Probably not, I just couldn't stand glass tops. I also have 2 golden dwarfs and they have shown no interest in the top of the tank. I have built an underground maze with 1/2 pipe for them and they rarely stray from that. my .02 :)

Oh neat. Are the 2 golden dwarf's a pair? I tried adding a second one to my cube but it was a disaster. I've since heard it's not a good idea to get more than one unless they are already a pair.

Would you mind posting pictures of your tank and the pipework setup? I would love to see it. I'll search on your posts in case you have done do already but I'll preemptively ask you anyhow just in case. :)

they aren't a pair but I had intentions of putting them together, but one of them is in my 90 reef and there is almost no way of getting it out lol

ill snap a few pictures tomorrow when the light come back on.