Hi Guys
This is my first post and although been growing for a couple of years I still have problems.
1,Very little root mat, any theories
2,How long should i leave nutrient pump on (NFT)currently 15mins on 15 off
3,Where can i find correct EC levels for various stages (using Canna)

My set up is as follows:
45 litre NFT
8"inlet running total about 4 hours a day
8"Extraction constant on 20%
16"Ossilating fan constant
Humidity 50 to 60%
Temperature 24 to 27 degrees
microjet pumps with air inlets
600w HPS Shine reflector
Any advise would really be appreciated Thanks
blooozboy Reviewed by blooozboy on . Hydro help needed Hi Guys This is my first post and although been growing for a couple of years I still have problems. 1,Very little root mat, any theories 2,How long should i leave nutrient pump on (NFT)currently 15mins on 15 off 3,Where can i find correct EC levels for various stages (using Canna) My set up is as follows: 45 litre NFT 8"inlet running total about 4 hours a day 8"Extraction constant on 20% Rating: 5