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How many net pot holes would you drill in my setup?
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How many net pot holes would you drill in my setup?


Hey everyone, I’m building my first DIY DWC setup and I’d like your advice on plant spacing.

I’ve got two heavy-duty totes:
• Size: 70 liters (~18 gallons each)
• Dimensions: 29” × 20” × 12”
• The lids have a grid pattern of ~3” squares, so I can easily center holes.

My plan is:
• left: One tote for fast greens (lettuce mixes, arugula, spinach, herbs) → I was thinking of drilling 2” net pot holes.
• right: One tote for larger greens (romaine, bok choy, Swiss chard, kale, etc.) → I’d go with 3” net pot holes.

Lighting: I’ll hang two Spider Farmer SF1000D grow lights (100W each), one above each tote.

How many holes would you drill per tote for a balance between yield and plant health? . For proposed pattern in the pictures (left 2inch cup: 14; Right larger 3inch : 10) see yellow post it

by pg_raptor

6 Comments

  1. yolk3d

    Like 6, maximum. Even lettuce is gonna get 20cm wide.

  4. veliidae

    Just me, but I would get started first on something like lettuce to practice timing out a production cycle. I would get some 1” thick Styrofoam boards and trace out a floating raft. One bin with 36 1” holes. The other with 9 1” holes. Pick three varieties of lettuce. Use one bin to grow in high-density and cycle them into the other low-density bin for a finishing spacing. All this using 1”x1” rockwool in 200ct (10×20). Hell, maybe the high density raft could be cut in to 4 pieces so you can take out and clean the raft pieces between transplanting starters.

  5. silentsinner-

    These are too deep for lettuce. It doesn’t mean you can’t do it it just means if you are properly spacing the plants you will have way more container, water, and nutrients being used to grow what could be growing in something smaller. I could see using each of these for three pepper plants.

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