Rusty speckles could be a potassium lockout. Hard water can cause that. There are nutrient solutions that are labelled 'hard water formula' containing slightly lower mineral levels. You may be a candidate for those.
stinkyattic Reviewed by stinkyattic on . stinky please help does any one know what this could be? my problem is this some of my leaves are canoeing and twisting as in pic also the leaf edges (pointy bits) are curling up growth still seems good also will it affect my yield? my set up is as follows... Rating: 5