so chaeto doesn't give off plankton, ...doesn't bubble algea or other marine plants, see i had thought that one of the points of a refugee was to have a steady stream of photoplankton and if this is so then i need to run my lights only at night since running them 24 hours a day seemed to kill off my other types of plants; the thin blade algea and bubble algea. Also i have 15 pounds of miracle mud on top of my 5" DSB, have you heard any pros or cons, or is it just possibly a rip off