I got a christmas worm rock yesterday and am wondering what is the best phyto to use there seems to be different sizes/types I am considering using brightwell phytogreen M anyone else have worm rock what has been your experience with them I acclimated for several hours & have it low in the tank now I have read some places say low in tank & sheltered others say as much light & flow as possible I plan on low in the tank for a week or so & slowly moving it up thoughts???