Aero-Gro Gro-Ops
The Gro-Ops Field Guide.
Everything you need to set up, run and troubleshoot your Gro-Ops, written by the grower who built it. Keep it open next to the case.
The pressures, droplet sizes and spray times in this guide are our best current data, drawn from published grower guidance and our own testing in the Aero-Gro Living Lab. We keep refining them, and every grower who grows with Aero-Gro equipment can share results to help make growing better for everybody.
Three connections and you are ready to run
The Gro-Ops was designed so setup is simple. Connect these three lines to the case and the system is ready.
- Plug in the purge lineConnect the purge line to the case.
- Plug in the nutrientsConnect the line from your nutrient bucket.
- Plug in the spray lineConnect the spray line that feeds the nozzles in your Grow Bucket.
Every Grow Bucket carries a status light for an at-a-glance check that the system is running properly.
A true aeroponic mist, not a spray
A 12 volt pump charges a 1.1 liter accumulator tank to 70 to 100 psi, and fine 0.6 mm nozzles turn that pressure into droplets in the 20 to 60 micron range. Everything fits in one Pelican case.
| Part | What it does |
|---|---|
| 12 V SureFlow pump | Fills the tank in about 10 seconds and holds pressure at 70 to 100 psi |
| 1.1 liter accumulator tank | Stores pressurized solution so every spray starts at full pressure |
| 0.6 mm nozzles | Break the solution into a fine mist, 20 to 60 microns |
| Timer control | Sets how long and how often the roots get misted |
| Pelican case | Keeps it all together, protected and portable |
A pump alone has to ramp up every time it runs, so the first part of each spray is weak. The accumulator holds pressurized solution ready to go. When the timer opens the valve, the full 70 to 100 psi hits the nozzles at once, and the mist comes out crisp from the first second. The pump then refills the tank in about 10 seconds and sits idle the rest of the time, which means less wear, less heat and a quieter system.
Short bursts, a few minutes apart
At 20 to 60 microns the mist hangs in the air and coats the roots quickly. A burst of about 3 to 4 seconds on, followed by a few minutes off, is a good starting point for most crops. A fully charged tank delivers that burst to about 8 nozzles at full pressure, then the pump refills it in about 10 seconds before the next cycle.
The right burst length depends on chamber size and nozzle count, so treat 3 to 4 seconds as a starting point and adjust by watching the roots.
Frosty and damp
Roots coated in a fine, frosty film of mist and damp to the touch. This is what you are aiming for.
Dripping
If the roots are dripping, the burst is too long for your chamber. Shorten it and watch again.
Why 0.6 mm
The 0.6 mm nozzle is the sweet spot between mist quality and reliability. At 70 psi it makes droplets in the 20 to 60 micron range, close to the commonly cited 50 micron target. Finer 0.4 mm nozzles make a thinner mist, but their tiny openings clog much more easily. Bigger 0.8 mm nozzles resist clogging but produce larger droplets that can start to wet the roots.
| Nozzle | Estimated droplets at 70 psi | Clog risk |
|---|---|---|
| 0.4 mm | About 10 to 30 microns | High |
| 0.6 mm (Gro-Ops) | About 20 to 60 microns | Low to moderate |
| 0.8 mm | About 50 to 100 microns | Low |
Droplet sizes are estimates scaled from published figures, not measured specs for a specific nozzle.
Troubleshooting at a glance
| What you see | Likely cause | Where to look |
|---|---|---|
| Pump runs long and cannot reach full pressure | Supply side problem | Clogged filter or pump intake |
| Pressure builds fine but the spray is weak or uneven | Nozzle problem | Clogged nozzles |
| Only a few nozzles misbehave | Individual nozzle clogs | Clean or replace those nozzles |
| All nozzles weaken together | Supply side problem | Filter, pump or supply line |
A 50 micron inline filter before the manifold is cheap insurance against clogs, and the Gro-Ops ships with one.
Nutrient salts are hard on equipment: they clog nozzles, bind up moving parts and corrode connections over time. The Gro-Ops uses waterproof connections throughout and 3D-printed overspray guards to protect critical parts, but it is still worth checking nozzles and the inline filter whenever the mist looks off.
What is built into the bucket
The Gro-Ops case can turn almost any container into an aeroponic grow chamber. The Aero-Gro Grow Bucket is designed to work with it and completes the closed loop.
Continuous aeration
Runs continuously, keeping fresh air moving across the root zone between misting cycles. Roots need oxygen as much as water.
Status light
Shows at a glance that the bucket is receiving power and running properly.
Closed loop
Sends nutrient solution from the Grow Bucket back to the nutrient tank, completing the cycle.
Tall plants: the Grow Bucket has drilled holes built in to accommodate a standard 2 foot tomato cage, so staking up tomatoes, hot peppers and other tall or heavy growers is already accounted for.
Adding a bucket is one connection
The first Grow Bucket plugs into the Gro-Ops case. Each additional bucket plugs into the one before it, so adding a bucket is one connection, not a rebuild.
| System | Accumulator tank | Buckets | Case |
|---|---|---|---|
| Gro-Ops | 1.1 liter | 2 buckets, fed really well | Pelican case |
| Larger Gro-Ops | 2 gallon, with a slightly larger pump | About 4 to 6 buckets | Slightly larger Pelican case |
Bucket counts are our current design targets and will be confirmed in testing before final specs are published.
Start with the water
Water quality is the foundation of everything in this system, so every Gro-Ops purchase includes a free Aero-Gro 5-in-1 water testing meter. Test your water before you mix nutrients, and keep testing as you grow.
One thing to know: the 5-in-1 meter does not measure chlorine. If chlorine in your tap water is a concern, use a separate chlorine test.
Most of the components in the Gro-Ops are the same materials used in the reverse osmosis water industry, so they are food-safe and built for continuous contact with water and nutrient solution.
Bring your own, sized to your buckets
The Gro-Ops kit does not include a grow tent or a light. Every grower's space, crop and bucket count are different, so use this sizing guidance to choose the right tent and light for your setup.
| Buckets | Suggested tent footprint | Light guidance |
|---|---|---|
| 1 to 2 buckets | Small tent, about 2x2 to 2x4 ft | A single compact LED grow light sized for that footprint |
| 4 to 6 buckets (larger Gro-Ops) | Medium to large tent, about 4x4 ft or more | A full-coverage LED grow light rated for that tent size |
Quick answers
How long should my mist burst be?
Start with about 3 to 4 seconds on, followed by a few minutes off. Then adjust by watching the roots. They should look frosty and damp, never dripping.
How fast does the tank refill?
The pump refills the 1.1 liter accumulator tank in about 10 seconds.
Can I use my own containers instead of the Grow Bucket?
Yes. The Gro-Ops case can turn almost any container into an aeroponic grow chamber. The Aero-Gro Grow Bucket is designed and optimized to work with it, and adds the fan, status light and return pump that complete the closed loop.
How many buckets can one case run?
The Gro-Ops feeds 2 buckets really well. The larger Gro-Ops, with a 2 gallon tank and a slightly larger pump, is designed for about 4 to 6 buckets. Those counts are design targets we will confirm in testing.
What if my plant outgrows the bucket?
The Grow Bucket has drilled holes for a standard 2 foot tomato cage, so tall and heavy growers can be staked up.
Does the 5-in-1 meter measure chlorine?
No. It does not measure chlorine.
Does the kit include a tent and light?
No. See the tent and light sizing guide above to choose the right ones for your bucket count.
You are never learning alone
Aero-Gro backs every system with an extensive YouTube library of educational and reference content, and customer service is there for any question or advice you need. Grew something great, or hit something we should know about? Tell us. Your results help make growing better for everybody.