Not sure if anybody in the forum uses a air pump with stones or a vortex to add DO to your water? Have been reading on it and seen a vortex is the most effective way to do this. Also having the water at 16 c /60 f allows the water to hold more air but not to cold on plants. Also helps root rot from overwatering due to the increased oxygene. Aswell as the increased growth and health if the plant. Was looking at vortex brewer's but seems like they could be built fairly easy.