I am having problems with my clown loaches digging up my plants. I want to start them in rockwool before planting to minimize the effects of this disturbance. Pet Warehouse has the Hagen and Aq Products plant plugs. I am not too impressed with the Aq. Products, especially since it is impregnated with AP fertilizer. Is the Hagen stuff any better? Is there a better, hopefully cheaper alternative? Thanks in advance. TOm