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They all have different strengths. Start off carefully with less than what is recommended on the bottle and watch how they react.
Often people use 1) water +fert, 2) water + fert, 3) just water.
E.g. every third watering is without ferts, so the soil doesnt fill up with salts from the ferts.

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faithlessxxx Reviewed by faithlessxxx on . Yellowing leafs hey i got two ice and a white widow just wondering my ice's are starting to yellow a bit. Im not giving them any nuts atm. Is it a nitrogen deficiency or should i give them some nutes? There only about 3 -4 weeks old. The white widow is perfect though maybe the strain needs different amounts of things then the ice? anyone help?> Rating: 5