[freydo]

what fertilizing method are you using that requires you to use chuck's calculator? it kind of seems like you're following the EI method with amounts you're dosing, but it also seems like you're using the PPS method.

i would suggest using the PPS method. with it you dose 1ml/10 gallons or 15ml each day. a 500ml container would last ~33 days, and the required dry ferts for each batch would be ~10-40 grams each.

check out this link for the PPS calculator:

http://www.aquaticplantcentral.com/forumapc/showthread.php?t=30659

 

[freydo]

you dose 1ml per 10 gallons, which is 15 ml each day. but your numbers look right. if you don't have one already, you will need a gram scale, with a minimum accuracy of 0.1g. the PPS method does not need anything more accurate. but if you find one with 0.01g or 0.001g, even better, but not detrimental to your plant's health and nutrient needs if you can't.

you can use whatever size container you want, the best is with ml markings on the side.

also the TE would be in a separate container. for this i just dose flourish (not flourish trace) following the recommended dosage on the bottle. but you can use whatever you prefer.