If i had to deal with high water PPM's, then i would start everything off at 1/4 strength, PH the water, then add to system. Check in 12 hours if PPM's have gone down or up...
If you water in a nute solution that is 200PPM for example and you check in 12 hours. If the PPM/ec is dropped just pour a small amount of water out into a cup, add more nute solution to cup then dump back into the system. If it has shot up then just dilute the nute soltuion down a bit.
The main reason i seen people get in trouble with hydro is when they loose control. Staying on top of things like PPM's, Temps and PH is key, imo. If you check it regularly and make sure its not doing wild swings then you could be fine.
If you water in a nute solution that is 200PPM for example and you check in 12 hours. If the PPM/ec is dropped just pour a small amount of water out into a cup, add more nute solution to cup then dump back into the system. If it has shot up then just dilute the nute soltuion down a bit.
The main reason i seen people get in trouble with hydro is when they loose control. Staying on top of things like PPM's, Temps and PH is key, imo. If you check it regularly and make sure its not doing wild swings then you could be fine.