Why tear down? IMHO, shrimp need a quiet, established, long-term peaceful environment, as little disturbance as possible. And they need time; this experiment is only, what, a couple months old?
The first time I tried shrimp, plain ol' Cherry Reds, I bought 6 and introduced them into a tank that had been operating for years and was crammed with Java Moss, Guppy Grass, Hornwort, Duckweed. They disappeared and I didn't see one for many weeks. Decided shrimp weren't for me.
One day, I spotted one of the original adults, and I was over the moon. Then, more weeks later, I realized I was looking at a tiny red baby shrimp in the moss. I peered closer; yep, and there was another one over here, and a couple over there, and a bunch in that corner, and...they were all over the place. A year later, that tank was crawling with hundreds of shrimp of all sizes, and for several years I was able to harvest at least 200-300 every couple months and found a ready market for them. I also had to start culling as more and more brownish throwbacks started to appear. They sneakily start to take over, and they are much tougher to see than the red ones.
If you must have fish in there with them, be aware that even a Neon Tetra or other teeny-tiny fish is a Tyrannosaur-ish predator to these little shrimplets. And a planted tank is nice, but for maximum shrimpability, you want a jammed-solid-with-moss, barely-room-to-swim
PLANTED tank. Lots of leaf litter on the bottom, too.
Patience, Grasshopper...they will come...
