input needed

I'm going with a underground and completely off the grid system, here are my plans:

btw very remote area

Building:
I'm starting by building a 6 by 6 chamber [possibly 6 by 8] with a 4ft door [making a tunnel underground] and two four inch holes for my ducts which will be buried and about 10-15 ft from my chamber.

Electrical:
Now, I am going to be using a 500 - 750 watt inverter with as many deep cycle batteries as needed, I'd say 3-5 b/c I'll have to switch them out and charge them. I do not know how often I would have to switch the batteries out, but it would be nice to do to about every 1.5 - 2 days.

I have been looking into using 3 50 watt LED lights. Each one with cover a 3ft by 3ft area, at least that's what I have been told. So, that is 150 watts right there.

I'm using 2 4inch duct fans, one coming in and one going out.
Each duct fan is 30 watts, so 60 watts.

I want to use a 18-24inch floor fan to keep the air moving about in the chamber. I'd say a 40 watt fan at the very most.

So, all together that's a 250 watt system.
But I do not know how many watts a small submersible pump runs off of.
If you do, let me know.

This is my 3rd project, so I know all the cycles and all.

My main question is if it is possible to power a 250w-300w system using a power inverter and deep cycle batteries? Also, how many batteries I would need to purchase.

Is 3 50w LED lights enough?
The guy at the store said it is, but I need to know from someone who actually has used them or knows more about them then I do.

I have never used nutrients before, but I would like to with this project.

Let me know the best soil to use and nutrients.

The 24h lighting worries me with the power inverter.

Please let me know the pros and cons of this.

Thanks dudes
I have many questions, but I will just start with those.

well i dont know about the batteries cant imagine it will go well carrying all those batterys and i dont think they will last that long but led dont do it for plants use an hps

well, i called an inverter power store and they said it is possible, but i wanted to know if anyone has had any experience with using a inverter.

Have you thought about running a sub breaker panel off your main down your tunnel? Or do you not want to use your power at all?
If you're sold on battery power and generators etc.... You'll want to look at amp/hour ratings.
A simple google search on amp hour calculations would help you guestamate running times. I'm watching football, so I don't have an example, but I know in class a few years ago, our first example on that was calulating how long your cell phone batery would run given nominal usage.

edit: and it's not about number of batteries.
Again this sounds like an ambitious project. Might want to learn a lot more about batteries, power, and electrical before doing this stuff rather than someone spoonfeeding you. Batteries have cells and such in simplest terms....the deeper they are the more energy they store, but that is just the icing on it. Were just now getting the cars to go putt putt zoon on the the batteries and my brother worked on GMs first attempt back in the early 90s and it fell through. Lots to learn and know before busting out that pick axe

Personally, I think you're better off to have a shed with Solar Panels in the area(make it look like a hunting shed or something) that will power or atleast supplement the thing and then have wires run underground through PVC to your grow area.

In case you haven't already thought about how you're doing the underground grow room you could use Trucking Storage Containers. Very ambitious indeed.


-potlike