salt build up?

hey guys.. new grower here i suspect some salt build up in my plants as they are gone kinda yellow it may be due to me over fertilising at a young age and over watering what should i do?

should i let them dry out completely and just water with no nutrients? im growing in coco using a 600w hps

the thing is they start out green and as the leaves develop they turn paler starting at the tip of the leaf working down, i'm very concerned about them and would appreciate any suggestions or advice

Could be hard water?

possibly 'damping off' from poor drainage and overwatering ... (I just went thru a bout of this, so I blame everything on it, bear with me ... :D ) ... let them dry pretty well before watering, and try transplanting into larger pot, with fresh soil , that saved mine ... :smokin:

thanks problem is they are in big pots already and space wont allow bigger ones? what if i was to break up the soil in the pot to loosen it up to allow air to the roots and improve drainage (being cautious of the roots)?? would it do more harm than good?

I dont think that would be a good idea, disturbing the roots is usually a bad thing ... just be sure it has drainage, and let them dry out between waterings, a good-sized pot usually only needs water about every 4 days, or so ... :smokin:

ok cool any other suggestions on how to improve the drainage?

LET them dry..

always add perlite to your mediums if overwatering is an issue..

I concur with the REAPER...

Over watering is difficult to come back from.. good luck!!

: )