My 100x scope is enough to allow me to see nematodes swimming around in the tea water. You may want to have a look, it's pretty interesting. I also had a look at the stingy slime floating through my water and saw no movement at all. Guess it takes a real microscope to see what's going on there.
None of my plants currently have slime, but if I make a new res it shows up in a few hours. This res can be completely dark, have ~0ppm, and no additives and it still get slimed. As I stated, I solved this problem by adding lava rocks and hydroton to my brew. Meanwhile I had one tub I did not mess with that had been allowed to get gobs and gobs of stringy snot in the water, collecting on the airlines as it floated through. (no plants) In my brew this time I used two airstones, one came out looking like new, the other came out with a thick black goo coating it. I have no idea why one gets goo and the other is perfectly clean, but I moved this black goo stone to the super stingy res. 15 hours later I had a look and there is NO stingy stuff in the water and the cloudiness cleared up. I moved one small barely rooted clone to this water and low and behold a root tip has begun to peak out of the bottom of the cup.
So, just placing tea into the water did not prevent the stingy slime, but it seems adding any type of housing will IF you brew the housing in the tea batch initially. The inoculated hydroton doesn't seem to be keeping my clone water from foaming.(although so far water looks clear and the cut stems still look fresh) My next step is to move a larger plant into the clone tub, spread out it's roots, and set the cups among these roots.
Click here if you are not familiar with my shallow water cloner.