Complete Pi-Rack Kit – Vertical Hydroponic System for 300 Plants

You are looking at the Formula 1 of indoor cultivation. The Complete Pi-Rack Kit is not just a pot holder; it is an advanced vertical hydroponic system designed to shatter the limits of production per square meter. If you have ever dreamed of turning a confined space into a high-performance factory capable of housing up to 300 plants with absolute precision, this is exactly the equipment you need to make the leap to the professional league.

Why choose a vertical system like Pi-Rack?

Are you tired of seeing how limited floor space caps your production? typical flat indoor setups are inefficient: you waste all the vertical volume of the room, and you need a ridiculous amount of lamps to cover a large surface area. This translates to wasted electricity, wasted space, and a harvest that never quite reaches its full potential.

It is frustrating to know that you could be harvesting three or four times more, but the architecture of your room won't allow it. Managing hundreds of pots on the floor is a logistical nightmare: back pain, unreachable corners, and uneven light distribution that leaves some plants weak while others burn.

The solution is to grow upwards. The Pi-Rack uses a "colosseum" or stadium design. By placing the plants in a circle around a central light source, you reduce the distance between the bulb and the plant to the minimum, maximizing lumens like never before. With this system, you condense the power of a massive crop into a cylinder of just Ø215x220cm. It is the smartest way to optimize your resources.

How the Pi-Rack maximizes your harvest

This system is a masterpiece of Dutch engineering. It works with a "feed to waste" (non-recirculating) method, which is the gold standard for hygiene and control in hydroponics. Here is why this beast changes the game:

• Maximum Light Efficiency: The kit includes 4x 600W bulbs placed vertically in Cooltubes at the center. Every lumen goes directly to the plants; nothing is lost to walls or floors.
• Disease Control: Each of the 3.5-liter pots has its own independent drainage. If one plant gets sick, the water doesn't recirculate to the others. You keep your crop safe.
• Top-Tier Components: We are talking about Gavita electronic ballasts (the best on the market) and a powerful Aquaking pump. Reliability is key when you are running 300 plants.
• Perfect Climate: The open structure ensures excellent air circulation, preventing the dreaded pockets of humidity that cause mold in dense canopies.

Technical Specifications and Advantages

To get the most out of this gear, you should use a quality substrate like Rock Wool Substrate or Mapito, which offer the perfect aeration for this drip system.

• Capacity: Up to 300-320 plants in a 2.15-meter diameter circle.
• Lighting: 4x 600W SHP Phytolite bulbs + 2x Double Cooltube (150mm) to keep heat under control.
• Electronics: 4x Gavita 600W dimmable ballasts + DV14-K Timer box for safety.
• Irrigation: 250L Tank + Aquaking Q4003 Pump + Digital Timer for seconds-precise watering.
• Assembly: Click-system for quick assembly and disassembly (no tools required).

If you are setting this up, make sure to check our section on Hydroponic and Aeroponic Systems to understand the basics of EC and pH management, as this system demands precision.

Frequently Asked Questions

How much space do I need to install the Pi-Rack?

The assembled system measures Ø215x220cm. However, you need a room slightly larger to move around it comfortably. We recommend a dedicated room with strong ventilation, as managing the transpiration of 300 plants requires good air extraction.

What substrate is best for this system?

The Pi-Rack is designed for substrates with high aeration and good drainage capacity. Mapito (a mix of rockwool and PU flakes) or pure rockwool slabs cut to size are the standard choices. Avoid soil, as it can clog the drippers.

Does the kit include everything I need?

Yes, it is a complete kit. It includes the structure, pots, lighting (bulbs, ballasts, cooltubes), irrigation (pump, tank, pipes, drippers), and timers. You will only need to add the substrate, the nutrients, and of course, your selected seeds or clones.

Why is "feed to waste" better than recirculating?

In a system with so many plants, pH and EC stability is crucial. In recirculating systems, plants change the water chemistry rapidly. With feed-to-waste, every plant gets fresh nutrient solution with the exact pH/EC you set, every single time. Plus, it prevents the spread of root pathogens.

Personal Experience of Pevgrow’s CEO (Alan)

I remember the first time I saw a Pi-Rack in action in the Netherlands; the sheer density of green was overwhelming. It's not a system for beginners, I'll be honest. You need to have your nutrient dosing dialed in perfectly because things happen fast here. But once you get it running, the yield per watt is unbeatable.

My advice? Don't skimp on the extraction. Having 4x 600W lamps in a vertical column generates heat, even with Cooltubes, and 300 plants transpire a lot of water. If you pair this system with good climate control and high-quality Marijuana ballasts like the Gavitas included, you are going to see harvest numbers you didn't think were possible in a domestic setting.