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Grandma’s Secret Garden 9 Plant Grow Box Review

Why the Grandma’s Secret Garden Grow Box?

The Grandma’s Secret Garden grow box is the ideal grow box for those who want to learn about hydroponic growth but don’t want the hassle of building and kitting out a grow room. It includes all you need to grow your very first hydroponic crop. All you need to add is your chosen nutrients.

  • Dealzer is the manufacturers of Grandma’s Secret Garden grow box, they take stealth seriously. So the grow box and all of its components are designed and selected to make stealth a priority;
  • Dealzer are also committed to making hydroponic cultivation accessible to all and Grandma’s Secret Garden grow box is easy to use with full instructions and a lifetime of technical support;
  • As well as all this, Dealzer are committed to quality and back this up with a lifetime warranty on the Grandma’s Secret Garden grow box.

*** Buy Grandmas Secret Garden through the good guys at Dealzer

Grow box Grandmas Secret Garden

Build Quality, Size, Yield and Security

  • Grandma’s Secret Garden grow box is built from sturdy half inch MDF. This makes it light yet strong and helps to keep the price affordable;
  • This cabinet measures 36″ tall x 24″ wide x 13.5″ deep. Enough room for up to nine small plants;
  • Ideal grow box for auto-flowering strains, giving you the potential for more than 7 crops per year;
  • Secure lockable door keeps your plants safe from overly inquisitive people;
  • Three and a half gallon reservoir with nine plant DWC hydro system;
  • Grandma’s Secret Garden is built to last.

Lights, Ballasts, Control and Power


  • 360W of light at 6500k is delivered by 6 X 60W CFL grow bulbs during the vegetative stage of your plant’s life;
  • 360W of light at 2700k is delivered by 6 X 60W CFL flowering bulbs during the budding stage of your plant’s life which is good for your flowering;
  • By using CFL grow lights Grandma’s Secret Garden grow box keeps heat down to a minimum, enabling plants to grow close to the lights without burning;
  • CFLs are efficient to run, you may not even notice any difference in your utility bill;
  • Grandma’s Secret Garden grow box runs on heavy duty, 24 hour cycle timers. These analogue timers are durable and trouble free, taking care of your plants’ lighting regime for you.

Grandmas Secret Grow Box LED Grow Light

Air Movement, Air Filtration, Heat and Odor Control

  • Dual carbon filters built into the air circulation system use the same military technology that is found in gas masks. This keeps the exhaust from the grow box totally odor free, ideal if stealth and discretion is important to you;
  • A high spec, 80mm PC fan provides the air circulation. The fan is rated at 28CFM and runs at 2,200RPM. Good air circulation allows your plants to thrive and keeps stems strong and healthy;
  • The fan adds to the stealth properties of Grandma’s Secret Garden grow box. Operating at only 24DBA, the fan is quiet as a whisper;
  • Rapid air circulation and CFL lighting keeps temperatures down. In effect Grandma’s Secret Garden grow box is self cooled, eliminating the need for further temperature control measures;
  • Hiflect insulation maximizes the lumens available to your plants. This avoids wasting light inefficiently and ensures your plants make the most of the light available;
  • Oxygen for the Deep Water Culture system is provided by a high performance Marina 75 air pump (or equivalent). This pump operates at 1,500cc per minute, providing 2.5psi of pressure. The pump is rated for a 10 gallon tank and as such is well over spec for the 3.5 gallon tank in Grandma’s Secret Garden, delivering ample oxygen to your plants’ root systems;
  • Like the fan, the Marina 75 air pump runs at a whisper, keeping the overall noise of this grow box to a minimum.


Hydroponic system – How does it work?

If it ain’t broke, don’t fix it! Grandma’s Secret Garden grow box uses Deep Water Culture hydroponics because, time after time, it has been proved to be highly effective, promoting extraordinarily vigorous growth.

The other important feature of the DWC method is that it is real easy to use and understand. With DWC your plants’ nutrient needs are met by having their roots hanging in a highly oxygenated nutrient solution. If the water is sufficiently oxygenated the roots can stay submerged indefinitely, avoiding the need for the complicated timing schedules associated with other systems such as Ebb and Flow.

Grandma’s Secret Garden grow box uses this tried and tested hydroponic method to make the art of growing accessible to you.

  • Three and a half gallon reservoir;
  • Nine X two inch net pots;
  • Powerful air pump;
  • Easy to follow instructions.



The Grandma’s Secret Garden Grow Box comes with Dealzer’s fantastic lifetime warranty. On top of this is their well respected lifetime of free technical support. Just contact them by phone or e-mail for continuous technical assistance.

Optional upgrades

Grandma’s Secret Garden comes with no specific optional upgrades. However, there are upgrades and components from other grow boxes that are compatible with Grandma’s Secret Garden.

*** Buy Grandmas Secret Garden through the good guys at Dealzer

What people saying about the Grandma’s Garden 9 Plant Grow Box

“I bought the Grandmas Secret Garden grow box a few weeks ago. The first thing I noticed was that this is a real easy system to operate. I already have six plants growing in it. I had always thought that hydroponic systems sounded too complex but this system is real easy. Dealzer supplied lots of information and the customer service has been superb. I would recommend this company on the strength of how helpful they have been.

Grandma’s Secret Garden grow box uses the same proven methodology as many other grow boxes because it works. You can expect stealth, efficiency and simplicity for an affordable price.

GD Star Rating
Grandma’s Secret Garden 9 Plant Grow Box Review, 6.5 out of 10 based on 71 ratings

One thought on “Grandma’s Secret Garden 9 Plant Grow Box Review

  1. celone says:

    You can not grow more than 2 plants. I have four plants and space is a big issue. It’s great for starting veg and germination and flower. The size definitely lowers yield.I have learned a lot about Aqua hydrophobics there’s no such thing as plug and grow ph up down it’s a full time project. Delzers nutes suck as for air circulation there is none they could of built in 6 inch fan no 4 inch since the box is so small air circulation is crucial at least a half hour a day. You can’t fit any accessories. If it was 4to5 feet tall it would be a great system with other options at the same price. I will make my own box and use GRMAS for 1 plant my yield health ph WILL be perfect for one bonsai plant. I was so disappointed when I received grandmas but gave it a try it’s good for beginners but if you want to learn how to really grow go bigger practice with this system

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