i have the same light and it works great for clones like perfect they die from my stupidity. but that aquarium heater you have needs to be fully submerged i also have the same one and if it isnt submerged it shuts off but i dont use my hps either but i found that with roottech clone gel and some olivias clone solution my peat bound clones root in 4 days with less shock than that damn cloner i made,when i transplant. good luck