This chart will tell u light cost! :)

found this link to calcualte light cost for you. very handy. seems to work right. enjoy!

Plant Grow Lights, Indoor Hydroponic Systems, Supplies/Equipment - Best Prices, Products & Delivery


oops, got to info then scroll down to light cost. easy also under the info section they have nutrient calculators!

i dont see a chart, just a link to some lights...

Geeze, I hope that thing ain't 100% accurate . . . kinda high operating cost, IMO.

across the upper prtion of the link yu will see a button that says info. click that. there are a couple dozen useful charts there. i liked the nutrient calculator. let me know if you still dont see it. Grodan has tones of helpful sited for rockwool also i have found. Scared of algae on cubes, put some hydroton dust on the up side of the cube. things like this, helpful. Aslo it syas to put a lemon in your res if your going awaya few days to help with ph drift, like a time release capsule!