Both groups develop with no apparent differences. The solution is the same. Today measurements that they drink 38 liters per a day. This is about 750ml for each bush or 8 liters for 1m2, it’s very good.
Some days I’ve thought about one problem. I use one tank for solution and one tank for drainage, each is 90l. One time I had problem with timer during irrigation, and the entire solution has flowed into the tank with drainage. It’s annoying, but not terrible. So I have two tanks for solution and one for drainage. Not fit. So pump works through 4 timers I haven’t invented anything better. I set two windows for irrigation and еру exact time. I’ve tried already. Four timers shouldn’t stuck simultaneously. Of couse, it is not 100% guarantee, but I sleep better.