I'm planning on 2 self sustaining tanks. One is 6.3 gallons and one is 10 gallons. I'm planning on scarlet badis and RCS for the 6.3 gallon. For the 10 gallon, I was thinking maybe a blue crayfish with RCS. They will be planted with Staurogyne Repens, Rotala Rotundifolia, Hygrophilia Corymbosa. I was wondering if the crayfish would murder all the RCS outright or it would manage the population reasonably well. If it's going to dig up all the plants, then I can't really have it... I can always put in scarlet badis fry from the 6.3 into the 10 gallon if the crayfish is a no go. All in all, what do you guys think of the plans?