OK guys. I want to share with you something.
First a story; My grow room is on a very slight sloping gradient. This means that the run-off pools at one end of the tubs first, and will eventually reach the Hempys drainage hole at one before the others. The graphic demonstrates it.
So what was interesting was that before I realized this was happening I noticed something was happening to the plants at the 'deep' end. The plants seemed to be developing larger buds with more crystals, however the leaf also looked locked out of certain elements. .. I then noticed that roots had been growing out of the Hempy drainage holes and feeding on the toxic looking run-off in the tub. ...(Hmm Bigger buds but lockout)
... well. .. I took note of what was occurring and moved on. I bought a wet-vac and made sure the tub never filled to that level.
FFW>> this week. Now by accident it's kinda happened again. I first noticed something was happening because the buds of that GDP Hempy was noticeably bigger, but also whiter and covered with more crystals. I also noticed the leaf was a strange color and pattern but otherwise healthy. Then it twigged. I pulled the Hempy out of the SOG and looked, NO DRAINAGE HOLES. I must have forgot to pierce them.
So this Hempy has had all the feed it wants and effectively is all res. I should add at this point I have NOT been drowning it because I now use a spray-gun to feed. It has developed purple color to BOTH leaf and bud where the other clone has none. wtf?