Well i've tried it with and without the Aquarium heater and clones root well with or without it. I've never really had an algae problem since i began using Tetra Easy Balance. Everyone has there own methods and they all work really well. I'm not gonna say my method because there are already enough good ones shown here. Bubble cloners are awesome but what is your success rate when transplanting them to soil? At first i had a couple wilt and die but now i'm batting 1000 after transplant into soil. I'm thinking of going aero for the next grow though!