Quote Originally Posted by michaelpeg
ok i already got some calmag also, i am using a 400 watt hps

I'm sure you already know that the HPS bulbs need to be replaced about once a year.
Once they start to dim, well, let's just say the drop in light is not linear.
After 2 years they are just about worthless.
Only other advice I can give on this is to start slow with the nutrients.
For clones and seedlings, start with plain, or just Calmag, water. 1/4 tsp. nutes after the first week or two, then 1/2 tsp. etc.
I really cant tell you exactly when to increase the nutes, but the plants will indicate their needs.
You just have to connect with their little green asses to figure out what they're whining about.:jointsmile:
Coco can look dry on top and still be too moist to water so lifting the pot is the best way to judge dryness.

Best of luck with it.
Wee Zard