Been growing for awhile now, just want to make sure I am doing it right. Cut at 45 degree angle, rooting gel put in ph balanced rockwool.
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Kinda.... So yes cut at 45 degrees right below a node then when ready cut off leaf/shoot just proud of stem and dip in rooting gel then into a small rockwool plug or rapid rooter etc.
I never scrape the stems just try to find supple clones that ain't all woody.
The holes look too large around those stems for my personal liking in those large blocks and they are difficult to get water content correct... They will probably still take, let us know?
I prefer to root out fully a plug/rooter until its going mental (10/14 days) then insert into bigger block soaked PH 6 and well drained for about a day (weigh them) with a very small amount of Formulex like 1/4 dose. Not tried your way but for at least 3 years every single clone I've done has taken. Everyone finds a way.
It takes some practice but the clone bottom right will be well ahead of the bottom left.
I can't say for definite either just yet but this run I have used 6 inch Cultiline blocks instead of 4 inch and they actually seem better! Stems way fatter!! Probably more roots in a bigger block before going into the trays but the main reason was because I'm a little heavy handed pulling them around to scrog them and have pulled the 4 inch blocks over a few times and torn the roots (totally my fault).
Also cut some 125x125mm Corex covers or anything to keep the light off the cubes and run a 35mm hole saw up the middle then they don't go green. I try to take clones off the mum just when others are flipped to flower, this gives around 10 weeks to root fully be topped twice and sort of start training under a 125cfl and be around a foot high when they go in the trays. They triple in size in 2 weeks ish. Quite something to watch