yeah, unfortunatly we have aslo had other discusions in here on the actual ph of the seperate units from the waterfarms. Sometimes the ph in the buckets can be different from the res. So watch out for that aswell. But for the most part find some ph buffers or nutes that maintain your ph. My bitonicare products used to have me phing twice daily aswell, but i started to use better ph down and it helps out alot, now i do it maybe once a day, and in my veggie room i use once every week.