That’s incredible… I’ve only heard good things so I’m going to try it. This tank was moved so sand is about 3-4 mths old but tank around 4 years. I still have a diatom bloom and some dinos but not many…. Crossing my fingers!!!I got a @geo cryptic reactor and put about 20 pounds of TBS rubble in it. I called the ladies TBS and told what I had they knew exactly what to load me up with. I did this for 2 reasons 1) I was fighting LCA and wanted to add some diversity to my established tank. This was part of a strategy that ultimately did beat LCA. Then, I knew I was going to temporarily move my 130G display into a stock tank for 2-4 months as I started to set up a new much larger tank. This worked magic, it was like an insta-tank. All I had in the sump was this reactor pushing about 450 gallons through. I moved half my fish fist as I knew I was going to need herbivores in the new set up (no real biofilm on the plastic). BUT, I let it run about 10 days on the cryptic and I guess it did help jump start the system. After 10 days, move some fish, checked ammonia daily for 10 days and nothing. Then I started to move everything over. It was a big help. I am going to say the diversity really does help. I just ordered 250 pounds of their sand and another 150 pounds of rock. Uber thrilled about this. I am one for not keeping rocks or bio in my sump (just preference). But, since I started using their stuff in a cryptic, for me, I won't have it any other way. Once I get my system up and running, I plan to get more of their stuff to fill a 60G cryptic sump I am going to add to my system at about month 4.
The more surface area the better I would think. If you never plan on using it in your display, I would say either nano or rubble. Rubble will get you more surface area vs. nano. I forget the price difference. I actually used their website and ordered nano and put what I was doing in the notes. They called me and advised me to go a different route.
Thank you very much for the info !!!