Rick ~ The new tanks are looking good. I love the backgrounds. Man I wish I lived closer to you, I'd smack you for taking down that 125
. What beautiful fish.
As for the DSM. You should get a spray bottle and spray the back AS to keep it moist. You also don't want that puddle in the front. I know it's hard with the steep incline, but you just need to stay on top of it. You should be able to grow the HC no problem with the DSM, but if you're not going to have co2 on these tanks, it's going to melt when you fill it.