Be careful, very careful. alot of bull out there. I have found great product on Ali but the Nano guys have been very careful to protect their products from theft. From my experiences Silicone with tiny holes does not make "nano" bubbles. I was able to see first hand the Gaia water system and was shown the outcome along with the requirements to use the product. I have alot more information but it is not all mine to share. It is not a flashy product with a sticker on the box. It requires a understanding of how to set up o2 or co2 systems along with other basic mechanical abilities.
Yes there are large US based farms using Gaia. I cant share everything I know as most sources of information are very very competitive and private. It is this competition and privacy that has slowed the sharing of this info/ knowledge.
I know of a fewish large companys/LPs that are now testing the use of Nano bubbles. Not sure how I know this but I know this.
The chiller kept the water at 74.f and the plants flew. As for Nano bubbles I am sure the system works and has value.
Even YouTube has open info.
Moleaer uses o2 tanks and as far as I know they still don't offer O2 concentrators. The concentrator is a whole other area to concern yourself with. For the most part any concentrator you use will not put out pure 100% o2. I prefer the 02 concentrator to tanks and if you look around you will find people doubling them up.
Send a e mail to these guys if you want to know what I am using.
https://gaiawater.com/. Again they dont know I am sharing this and you cant get a deal becasue you mentioned my name or the name of any site. This is not a advert or anything like that.
I will attach a pic of my little 5l o2 Concentrator. I am running their smallest system and using a 55 gallon container as the res. I have been playing with hydro systems for years and one year with this Nano system. I prefer to push all the limits and see what can be done.