Hey MrHowardMarks,
I bought a 18 pot ebb & grow system with a 55 gallon reservoir and plan on putting the 18 pots on a 6.5' X 3' table under a 1,000 watt MH bulb. It also came with a track and motor to move the light over the plants. I will also have a 3' by 3' area for the clones and mothers roughly with the mothers in 5 gallon buckets and the clones in a 2' X 4' ebb and flow tray. I also have a 600 watt HPS light from my first grow.
My first question is whether I should put the 1000w MH in the flowering room, 600w HPS over the clones and mothers, and some growlux over rooting clones or if I should put both the 1000w and the 600w in the flowering room hooked up to the motor and just use growlux for the mothers and the clones?
My second question is whether 1000w MH, 600w HPS, & some growlux will be a big enough bump in the electrical bill to arouse suspicion?
First of all, no worries about your electric bill, that's hardly any power being used...
The Metal Halide should be used for veg, over the mother plants, and some fluorescents for clones.
The HPS should be used for flowering... The spectrum of a MH is blueish for veg, HPS is red for bloom.
The 18 pots will work perfectly in what you're describing, two 3 x 3 squares with 9 pots each... What I'm doing on a smaller scale.
The light mover is great, to set it up, find the center point to hang the track, and you'll want the light to move 3 feet back and forth over each 3 x 3 area, stopping over the direct center of each 3 x 3.
The clones don't need that much water, so an ebb flow table might be overkill, clone domes cost like 5 bucks at a garden store, and you could use jiffy pucks, rapid rooters, or rockwool in them.
Having a 1000W MH for veg, you'll be able to fully veg out your plants and put them directly into the flowering room, but using the bubble buckets will prevent this, so you might want to think about either getting more of those buckets for faster turnaround, or use a different method, and add another 600W HPS to the bloom room...
But most of all, I recommend doing a little reading on how to grow well, and the basics, it's always good to get a little refresher on the basic horticulture info that's around. Since you had confusion on MH or HPS for flowering, I assume you haven't done extensive research. Hope this helped a bit.