What is Reddit's opinion of Hole Saw Set HYCHIKA 19 Pcs Hole Saw Kit with 13Pcs Saw Blades, 2 Mandrels, 2 Drill Bits, 1 Installation Plate, 1 Hex Key, Max Size 6" and Min Size 3/4", Ideal for Soft Wood, Plywood, Drywall, PVC?

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I got this set a couple of years ago, it's just over $20 now. It does an okay job for the smaller holes, but the bigger ones take an eternity. I paid nearly the same amount for a standalone 6" hole saw to cut cornhole board holes and the difference is like night and day.

Just get yourself a set of hole saws for your drill.

Walmart has very low prices on plastic totes. These are fine for Kratky. They're a little soft for a method that would fill them, but they will do for the short period of Kratky growing with them full,

https://www.walmart.com/ip/Sterilite-Plastic-18-Gallon-Tote-Box-Titanium-Set-of-6/716536537

Twice the money but much more substantial. Too cheap to go looking for plastic barrel resellers on Craigslist.

https://www.walmart.com/ip/Sterilite-Plastic-19-Gallon-Stacker-Tote-Yellow-Lily/709791347?athbdg=L1200

These sizes are an ideal mix of being small enough to manage but large enough to do Kratky properly.

The tops of both of these can easily be drilled for net cup. Get a hole bit set. This set is cheap enough, and has all sizes. This is valuable for all sorts of hydroponic projects.

https://www.amazon.com/HYCHIKA-Mandrels-Installation-Plywood-Drywall/dp/B07Y1G2Y7K

With these bits, run the drill forward jus to get the guide bit through. Then switch to reverse for cleaner holes. Net cups of stated sizes exactly fit holes of those sizes. A 2" net cup fits a 2" hole.

On the list of things they never told me I would want is a siphon. This is just like siphoning fuel and is invaluable for emptying tanks. If you know the thumb trick, you just need a tube.

https://www.amazon.com/gp/product/B07X43WK2B

And my latest love for indoor where, if you want to go with Deep Water Culture is a Venturi air injector. A $20 water pump with a Venturi screwed into the discharge and a tube to access free air, it replaces a noisy air pump and air stone.

My standard pump - https://www.amazon.com/gp/product/B07L54HB83

does fine with a 1/2" Venturi - https://www.amazon.com/dp/B098DPQFHM

to aerate a reservoir. https://imgur.com/bU3MnVA

With DWC, you mechanically aerate the nutrient, so you can submerge the roots and let them get air from the solution. It's main liability, other than being on-grid, it that once you're running as DWC, if the pump quits, the plants start dying. They can't just switch over to Kratky. DWC is probably the most common home hydro method, because it has such loose requirements and can be done in any vessel. In my DWC, I use totes like those yellow-top Sterlite totes and make rafts by drilling net cup holes through blue styrofoam wall insulation sheets from Lowes. The raft floats on the nutrient solution, and you can see the solution level at a glance. The Venturi injector's air intake tube sticks up through a hole or up alongside the raft.

There's another method, wicking, you can consider, because it's versatile and applies well to outdoor. It uses soilless medium, like half perlite and half palm coir in pots. A piece of nylon rope extend in and around the medium and trails down into any sort of nutrient solution container.

The roots get their air exactly as they do in soil container growing. The wick will pull up to several inches and will keep the medium ideally moist. Can even adapt to a large plant like a tomato, with the plant in a large pot sitting on top of a five gallon bucket of nutrient.

Can move almost effortlessly outside in the spring, because the plants are okay for a short time with their wicks out of the solution while they move, and the buckets can be moved with much mess.

I have a 2'x4' tank in the greenhouse with a floating raft that supports pots of herbs, with wicks down through the raft into nutrient.

I got this set with variable sizes for less than 1 hole saw at the big box stores. I don't remember which size but this will have what you need.

https://www.amazon.com/dp/B07Y1G2Y7K/ref=cm_sw_r_cp_apa_fabc_brt0Fb01DEJHS?_encoding=UTF8&psc=1

I got this set of various sizes from amazon and its cheaper than one circular bit at a big box store. It will have the size you need.

https://www.amazon.com/dp/B07Y1G2Y7K/ref=cm_sw_r_cp_apa_i_C29qFbM54EPAG