If you have a solid IMO2 collection then I don’t see much of an issue with using a small finger full of that into the amount of water you are adding to the feed especially if you are adding Cleanser(vinegar), Medicine(OHN), Food(FPJ) and Protectors(LAB). If you want to be cautious then add Cleanser, Medicine Food and Protectors to the water and moisten your feed for now while you head towards IMO4.
