I thought I would post this short video of how I'm growing my cheato, but R2R doesn't allow videos I guess. I've been pretty successful with it so far. I just trimmed it back to a baseball sized ball. It was three times that size yesterday which was two week's growth of the size it is now. If I let it go a month, then it almost completely fills the center of the sump and gets tangled on everything to where it stops tumbling. I believe that's the key to growing cheato. It has to tumble. To achieve this, I placed a small Cobalt power head at the bottom of the sump directed straight out or slightly downward. This causes a circular crosscurrent in the water moving across the sump. This causes the cheato to stay suspended in the water column and just tumble continuously. I use a clip-on shop light from Home Depot with a 6500K fluorescent bulb which I run from 7 pm until 10 am. This provides some pH balancing during the night when the DT lights turn off. All that tumbling current in the sump also keeps the detritus from settling. I hope this helps!
PS: If anyone knows a way to post a video here, please let me know
PS: If anyone knows a way to post a video here, please let me know