looking good OGK has your mother got mg def she looks kind of weird ..
ive started my nirvana bluemystics beans in 1 inch rockwool cubes with no nutes just PHed water about 5.5 and they are looking ok still in the very early stages tho ..im trying to find a good pheno to make a good mother ,i'll see how it goes ,ive still not built up my room yet which is bad news ...but am waiting on workers fixing my loft but they are taking they're time ..lazy gits .
nice set up OGK will keep an eye on this
Running the pump 24/7 will help to introduce oxygen to the nutrition mix and keep the water nice and fresh and it wont hurt the plants at all.