tak another pot sam size as the 1 ur growin in,weigh its dry weight,wen pot ur growin in weighs his amont or a little less water,this should get u in the ball park,on wen to water.only other problem in early stage of life is he amont of water,dpends on pot size and plant size.i usally start of with 1/ oz o a ounce of water,wen thats start drying in one day intead of 2-3 days i up the amont by a 1/2 a ounce and so on.in 8 oz cups,nder florescent lights,usin water ph 7.4,no lime added to soil.most poting soil are ph 6.5.i dont use alot of foods at or at high strengths,so its easier to keep soil ph in check.its just eallyy eaier to add lime to soil though,i just got tired of phing the water,since it seems to tak diff. amonts on diff. nights to bring it down exactly were i need to be.with liming the soil the watering ph woundnt hav to so exact with the ph range,it can be between 6.2-7.0 on the average and thats the diff. between liming a soil or not liming one,one of them anyway.