System Overview

Power Supply connected to UPS\

High Pressure Aeroponics

EMT Tubing & PVC Corners

Water pressure for small scale

Wiring to sensors and relays

Air pressure for large scale

Network connection to poll heartbeat server

Programmable Logic Control System

An arduino sketch will be uploaded that controls 1 solenoid per mister for a total of 10 misters.

The grow area will use an estimated 700Watts after everything is up and running and currently the electric bill is paid for by our landlords.

The entire grow room will be connected to a 1.5Kva UPS that currently powers my workstation and servers. (this area has problems with squirrels knocking out transformers)

In the event of a complete power failure, the relays will de-energize the main grow lights and power a small backup light.

My workstation is configured to shut itself down within 5 minutes, which should provide the grow room with several days of electricity.

The 6 Gallon accumulator tank for mist prepressurization should last about 12 hours between pump cycles. The tank itself holds about 3 Gallons of fluid.

The entire room will first be wrapped in the 12' wide panda wrap and stapled to the wooden beams and caulked or taped at any seams leading to the house.

The flowering tent will be toward the back of the room and contain four 22" Diameter, 27" tall 32 gallon reycling bins, and be supported by the EMT Conduit tubing.

The tent will also be wrapped twice around with the panda-wrap and twice on the front and back sides, all seams sealed with metalic mylar tape.

The inside layer will have the zipper door attached and there will be holes cut and sealed for the vent ducting.

Ducting from the basement will enter the flowering tent directly and exhaust out the window or into the crawlspace and out the house vents (but only if we experience any extreme cold conditions).

Outside the grow tent will be the motherplants' root chamber along with a cloning chamber. Both under 24/7 light provided by a low-power LEDs.

If I had a reverse-osmosis water source in the grow area, I would not want 2 mother plants in the same chamber, but since water must be carried in, that will save a number of trips.

Each mister will be connected directly to a solenoid by a short length of speedfit tube. This eliminates the pressure build-up time found in poorly-designed or low-pressure systems.

The goal is to have a very fine, 25-50 micron mist fill the entire chamber and completely evaporate just in time for the next mist.

Impossible in real-world conditions, but we can try to get close.

Misters are located in the center of each chamber, about 12 inches from the bottom.

Chambers will have a hole drilled at the bottom for drainage.

Misters will fire for 1 second every minute in a round-robin.

Water usage calculator:

On-site simple RO system

With an on-site RO system, it's possible to further automate the process by including a Dosatron or building a similar device. So long as the mixed fertilizer is stable for the desired length of time.

https://www.dosatronusa.com/

HVAC System

The HVAC system is fairly simple. It is designed to maintain a negative air pressure in the flowering tent and pushes all the exhaust through a large carbon filter that will remove the odors.

Using the furnace as a CO2 source is the most efficient method available, but will require additional duct-work, an extra CO2 sensor, an adjustable fan and a relay slot to open and close the CO2 vent.

There is a good chance there's already enough CO2 in the furnace room as it is. I am not sure adding this at the start would be a good idea although it should be one of the first upgrades if levels are insufficient.