hey insert!! i just came back fro long holiday and read all this freat at once.
first - congratulations!!! amazing resolts.
i want to ask you some questions, i will try to contribute back also.
1. you didn't use top feed sistem at your grow. did you keep the water level at half height of the basket, and lowered it as the roots get long? was it enough to keep the rockwool moist? at what height you kept water level below thw basket during the rest of the grow? like one inch or so?
2. you used atami root stim all the grow. i was thinking you only use it at the beginning. you did it to compansate on lack of oxigen due to water temp? you used 1 ML per Liter? your roots stayed white all the wey to the end?
i also had the problem of rusting\spoting\yellowing of leaves at the top of the plants during the last two week. i knew there should be yellowing in the lower leaves, but it was in the top. maybe at the last 2 weeks they consume less nutes, and the excess potassium lead to cal-mag deficiency? who knows.
about adding cal-mag or not, i think it all depand on your background water. if you use RO water, you should add cal-mag. if you are using tap water thet comes already at EC of 0.5, you shouldn't.
some manufectorers have differents formula for 'hard' or 'soft' water.
i also had problems with water temp, so i glued isolating Polystyrene panels to the res, and attached ICE PROBE to it.
once the water in the res are isolated, they not get hot from the air outside.
i changed small frozen bottle every day, and with little halp from the ice probe it kept the water temp at 18-19c, when the temp in the tent was 30-31c.
http://www.ebay.com/itm/CoolWorks-I...ltDomain_0&hash=item2ebfcea0fe#ht_2091wt_1265
http://www.jbjnanocubes.com/contents/en-us/p10833.html
i read in another forum about people using igloo coolers (like those used to keep beers cold in sunny day on the beach) to grow. they use the round coolers as DWC buckets, and the big once as reservoirs.
in my experiance, once you isolated the res, the power is in your hands.
i don't know if i can place here link to another forum, but i will post some pic's from there.
i am also adding pic's of my reservoir with the ice probe attached, and the rusting leaves at the end.
cheers!!!
coolers used for DWC, not my curtesey.