I'm using the Coco A/B. Was using the 13/14 PK, used a bit far into flower. Definitely some spires for me. I'm pulling way back in nutes this run, though I may add CO2 for this one and change it all up. Once I use all the nutes I have I'll be switching to Green Planet.House of horrors..i like that..what canna base nutes you using..i use the classic which is a little high in n but ive been getting good results.im finding running these nutes i dont need to go over 600ppm infact im feedinvg them 510ppm and 560ppm the other 2 .when i go over 600 i tend to run into n problems..ive actually got a little n showing on bud leaves right now.i dont use the pk 13/14 anymore and only using cannaboost around 20ml to 20 litres and i think i might even not use it nxt grow as that shit is bloody expensive as..im only going and run it from 3rd week to the 6th week in flower.im sure its got pgr's in it as i was getting spires ..new growth on buds at 7weeks ..