Nice fish there but I'd add a lot more decor for the fish to use as retreats. They will feel less stressed out and show better colours and health for it.
It also seems a lot of stock for the size of the tank what filtration do you have on there?
So many species of fish yet so little time, space and money to keep them all...
thanks, i want to ask, if i want to use sand for gravel, how to clean the sand from the fish pups, before i use a small stones for gravel, theres a lot of ex blood worms in the gravel when i siphone the gravel. about the hiding place, if i use pvc, how to build it? thanks
Sand is best as all the crap stays on top, so it is easy to remove, plus if you have high flow areas it tends to gather in certain areas-makes life much eaiser. I have no experience with rays, although i have heard that gravel can be a bit rough (not sure how much truth is in that). Sand/fine gravel that is smooth is best for loaches due to the delicate barbles.
You can just get normal pvc pipes and either gule them together with aquarium silicone into towers, or just put it on in. You could also use large rocks and slate to build caves and other areas to hide
I agree with Ashleigh. A thin layer of sand will be fine for all the fish in the tank, it only needs to be a few centimeters deep and the Rays and Clowns will really appreciate the substrate. Rinse and wash it well before adding to the aquarium and all should go well. Adding Bogwood and PVC pipes will help the Loaches feel more secure. Some pipe will float and some will sink so depending on type may need securing to something heavy.
So many species of fish yet so little time, space and money to keep them all...