First grow ever, I am using only MC and their bud explosion.
I have used MC from the start.
Only RO water + MC + hydroguard in a 90 gallon RDWC system.
I had some light leaks early on and caused some root issues about a month in, but i have not changed my water since then.
Also agree about it being super PH stable. It stays 5.7-6.0 without any help from me. The only time I had to PH my system was when I first filled it and the 1 water change. Theyre up to drinking 15-20 gallons every few days, so i just keep it topped off with fresh water from a holding tank and add nutes at the end of the week or if PPM get more than 100 below where I want it. When they were drinking less I kept a smaller holding tank with nute solution to keep it topped off.
I am up to 1100ppm and I have not noticed any settling. This may be because of the size of my water pumps and my sprayer waterfalls keeping it "stirred up" maybe? but all of my sites and outside res have no settling or deposit build up after 8-10 weeks of not changing anything. Just a little of the white ring around the edge.
I let them veg a little too long and they got a bit out of control because I didnt do enough trimming before I switched to flower. They arent quite as dense as they look, but I put a few more fans around the bottom of my tent to make sure theres still decent airflow. I learned a lot about how they grow and how to manage the growth so my next crop will be kept a lot more under control.
Here's two of my ladies some time last week. Everything starting to bud up nice now, will have to get some pics tomorrow.