Try using ionic hydro or even use ionic soil 1part if you can get a 1 part hydro grow /bloom /boost get them they are weak nutrients and work really well in dwc/rdwc systems. Also to cut down on root issues get frozen 2ltr pop bottles to put in buckets keep temps down. Also put frozen pop bottle by/next to your air pump maybe have a small fan blowing bottle on to airpump. This way you get icey air blowing into your buckets instead of hot air which won't help. If you can't afford a haliea water chiller. Look on usual suspects sites fb, Shpock, gumtree, etc. For a second hand unwanted water dri ks chiller for the office. Usually get them £40-£70 which is lot cheaper and will do job needed. Good luck im just having room built for 15 x 36ltr silver alien rdwc rain system and 1st run am going to run 15x chemical bride fem seeds from ghsc. 🤞All is good but will be going through different strains in either coco or coco soil perlite mix looking for nice phenos to be running on the alien will take cuttings and run them at home in a home made dwc before running in alien. I hope you get through this setback and finish in dwc it's a great system to grow ganja. Once you have had a successful crop. You won't want to grow any other way. Water temps are most important and cold air going into them. Set chiller at 16c to get at 17c. I have been messing about with dwc and rdwc since about 2006 done a few years organic in beds love the taste of organic weed. But can get a end product not far off organic quality flavour and taste but what you lose in taste and flavour you get back 10fold in weed and that's the important part yield you get this right. Its a win win win system less veg bigger plants more bud in a superb format nice taste n smell less waste product at end and you use less nutrients and water unless you get heavy drinkers. Win win win just prevention not cure when using this system you do t want to be fixing problems but running at full speed ahead. Sit back n watch giants grow. The fan blowing onto frozen bottle onto air pump is best little secret iv been using to keep temps down now I just keep my airpump in a old drinks chiller the pubs have behind bar under counter. And have a old computer fan sucking fresh air in chilled air out into buckets. Get ya temps in buckets down better to be to low than even a little to hot. Soul destroying that root rot especially when you get it just before you want to flip to flower
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