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Hotglue 3 compression springs onto a piece of mdf in a triangle pattern and sit the airpump on top. The springs will absotb the vibrations that would normally couple into whatever the pump is sitting on.

The power used by my water pumps is tiny compared to everything else, 5-10w per day isnt worth worrying about.

Most nutes are slightly acidic which will have no effect on stainless. I`ve used SS cornelious kegs for years to hold nutes and they are still perfect inside. If its just a non return valve i wouldnt worry about it hurting the nutes or the nutes hurting it.

you need more posts, how big is very large, some folks think a 5gal bucket is big ;)

yes manual charging so no pressure switch or relief valve required. I hook the 160psi pump up to whichever tank needs charging and physically disconnect it when its done. The tank psi depletes as nutrient is used the same as any accumulator. A 100L tank holds 40L of nutes 80psi- 140psi and i...

Dont bother with those cheap white RO accumulators (made in taiwan). Spend the money on a good quality accumulator..the bigger, the better imho.

Plants in soil dont need fans or pumps ;) As long as the medium isnt packed down tight or waterlogged they have enough oxygen. A tote would provide a lot more than that even with the smallest of gaps to let air in ;)

From the DO in the water which is finite, a glass of water is no different. Consider a cutting in something like perlite, some of the damp perlite particals will be in direct contact with the stem but there are also gaps.

The idea of using mist is to coat the stems with fine droplets that have gaps between them. Drenching a stem with a sprinkler doesnt leave any gaps, the film of water acts a barrier between the stem and the air in the tote ;)

Dont use baking soda..it contains sodium (Na), you want potassium hydroxide ;)

Uptake of P in bloom will drive the ph up not down ;) Its mainly the heavy potassium uptake in bloom that causes it to fall. Fwiw, N can drive the ph up or down depending what form of N it is. Nitrate (NO3) drives it up, ammonium NH4 drives it down.

The micro has all the calcium and nitrogen so you cant really do without it ;)

In veg, plants pull a lot of nitrate (No3) which drives ph up. In bloom, plants pull a lot of potassium (K) which drives the ph down.

The output pressure is adjustable, external pressure switch will make no difference. They bypass at the set pressure which is why they dont come with onboard pressure switches ;)

Half the gear isnt needed and/or could be done using cheaper alternatives. Some of the info in the pdf is inaccurate. for example, the pressurised air in the tank needs to be about 70% of the pumps max kPa. The tank air precharge has nothing to do with the pumps maximum output pressure, it has...

I have a 8800 and a 6800, the 6800 is quieter (almost silent) but i wouldnt say the 8800 is loud I guess its subjective ;) I use the dp 160 to manually charge the 100L accumulators so noise isnt an issue, I dont have pressure switches or pressure relief valves on the tanks because the pump isnt...

I`ll be impressed if its quieter than my homebrew ;) The background bubbling noise is from an aquarium in the same room.

The pressure is factory set at 80psi but you can adjust it. Aquatec pressure switches arent the best, buy a dwyer CXA series switch instead ;) If noise isnt an issue i would recommend 12v dp160. mine has a fair bit of mileage on the clock, 100% reliable and not that expensive. You do need a...

Not an issue for nozzles that run on compressed air ;)

Use what you like, i had the parts on hand apart from the 12v solenoid and timer. The total cost was only $40 including the coolbox ;)