Ok so took a break to focus on my other tanks and of course the babies I'm thinking the butterflies are opp the other tank mates bc they prefer slow moving water. I'm def doing 4-6 glass cats. I'm thinking gudgeons may be too small? If I were to do any other land or fish they would be lunch. The mini cycle is going well so far. I'll transport the water with the substrate I have in there out once I start construction. One more thing do you think the glass cats and pipefish might work? I will dominate this tank!