After 2 years of successful growing in deep water culture , using well water and Dynagrow , now we have moved and our well water is not as good , we have a very high content of iron and other minerals , We have gone to reverse osmosis water but were having problems with PH spikes and lockout, so now we have a combination of problems, yellow leaves, dropping leaves, curling, stunted growth. so this is what we have decided to do , we changed our nutes to Gen Hydroponics floranova series. using Floranova grow, along with floralicious plus, aquashield . to help them recover we have started our PPM's out at 250 in the veg room . We change our buckets weekly, sanitizing them each time and start with new water and nutes. Between changing we give them straight RO water . Our PH is being kept between 5.5 and 6.1 ,. With the flora nova we aren't chasing the PH spikes like when we were using Dynagrow. Budroom we are using Flora nova Bloom, cool bloom, floralicious, and aquashield. Keeping our PPM's around 400 for now and our PH at 5.5 and 6.2. we just changed the nutes and regiment a few days ago so we aren't seeing any great change yet, but expect to soon. Can any of you suggest any thing else to help these poor girls recover? Thanks in advance for any info you can give. Trying to stay warm up here in northern Michigan