I didn't want to over do it with the CUC, as I don't have much for them to eat yet. I guess my thoughts were 4 small inverts would be less bio load than one fish and If my readings were stable with the inverts I would be good to add a fish the following week...
I think that's a fine idea. There's no harm in going as slow as you want when adding your first things. It's a great practice to get into, and I commend you for not rushing.
