u/Space_Toast_Cadet

I used Styrofoam to build the gray shelves, and painted it in several layers of original concrete & masonry waterproof drylok. The gravel and shells at the bottom are part of a food safe epoxy, so none of it is loose and he won't be able to accidentally eat any of the rocks. The teal background is regular wall paint, painted on the outside of the tank to try and prevent a ton of light exposure through those sides (and I also just reallyyyyyy like teal). This whole completed setup has been sitting here, finished for over two weeks.

Do I need to fill it up with water to settle the pH of the materials, or is it good if it's been left to fully cure for over two weeks now? This isn't a question about cycling, just about making sure the materials I have used don't need any further prep before I move to cycling.

I soaked it in water for a day, scrubbed it with a toothbrush, let it soak for another day in soapy water, rinsed it off, let it soak in hydrogen peroxide for a few hours, and tried to scrub with an electric toothbrush. It looks better than it did before but I wanna keep going and get rid of the green spots, unless that's just the natural color of the shell but I don't think it is.