hi

u could cut the plastic pot open a couple of times around the top down the sides and then across the bottom if possile and being gentle open it up then transplant into the substrate u could check out www. plantgeek.net and see what they say .as for cleaning i not sure ,but as i noticed quote "-still dont know what ele to put in !"have u though about shrimp they are great cleaners i seen them for-sale on
www.livefish.com.au they have different shrimp ,blue ones sometimes but not the amano or crystal red shrimp (i do have a phone number of a breeder for crystal red shrimps in melbourne email if u want the number ) i have read that they are good cleaners , uneaten food and algae i hope i been of some help

as i am just a newbe too