Yes I spray with just water, but I've been modding the rooms intake and exhaust, so I have some drywall dust and the like finely coating the leaves, anything I can do to get it off, soap in water mist maybe? I only spray when the temps get close to 90f but the room holds between 72f and 86f but on a hot day, Its gone up to 90 once or twice, so I spray em' down.

BTW is 48oz watering enough for 2.5 gallon pots?(every 5-6 days)