Just on a whim, took a mated pair of Blue/Platinum Marble Veiled Angelfish and put them in a 35 gallon black tub/pond, one you would find at either Home Depot or Lowe’s, in my backyard. As a shout to Larry Bugg, purchased the pair for him. I have a weighted window screen covering it and give the pair about a 5o% water change daily. Just stick a garden hose in it and let gravity do the rest. Planted some tomato and pepper plants where the water comes out. Checked it today and they laid eggs. Of course, as angelfish are known to do, they did not utilize the slate I put in there, they laid the eggs on the side of the tub. So much for day 1, even though they have been outside for about 2 weeks already. Hoping they will raise their babies in the tub / pond. Will keep you all updated on the progress.