I'm using FFOF mixed with a bit of sunshine #4 for my new sprouts. I noticed a greyish/dull whiteish type of 'mold' on parts of the top of soil. Although different products than happy frog or peace of mind, could this be the "beneficial bacteria"? How would one tell? Better to be 'safe' and use ??? to get rid of it? If using peroxide, can it be the 3% and what ratio with water? 1oz per every 4oz?