i do spa service and also spa/hot tub moving and removal (haul to dumps) i come across alot of old ozones they have 2 types there are ones with a light bulb and some have chips. iam going to check into this a little more.
There are 4 types of ozone generators that i know of.
1 Corona discharge models run off of static electricity,they have ozone plates that run off of sparks,every spark releases ozone,kinda the same principal as running a mig welder,they have the highest rated output but they are seriously effected by humidity & require more frequent cleaning.
2 Ultraviolet or UV type,these run off of ultravoiolet light bulbs & generaly produce lower rated levels of ozone,the thing is that UV ozone production is not effected by humidity levels where the Corona Discharge units output is highly effected by humidity levels & ozone production slows as humidity rises,my understanding is that all Corona Discharge units are rated for output using a 10% humidity level which is not realistic for most people,something to keep in mind when comparing MGH ratings.
I own both of these types generators,i have 1 industrial model UV generator rated at 9,000 MGH (i'd have to look that rating up to be sure) & 1 industrial model Corona Discharge generator rated at 16,000 MGH,both these models are extremely excessive,i fucked up buying them as they produce way too much ozone & are designed for fire restoration or mold removal,i spent about $500 each on these units,they work great but running them is like being in a welding shop all day long due to the high ozone,its a level of ozone where the smell is highly noticable if you know what it is or are familiar with wire welding.
I also own 2 of the models pictured in this thread,they are rated at 500 MGH which when looking at the pro models seems like a very low output but its not,500 MGH is more than enough to take care of the average grow op & most of the larger grows also,when i say large im talking about 40 to 60 females in heavy bud,these models blow the pro models away at $140 each.
The other model generators i know of are for water treatment applications,the 3rd model runs off ambient room air & the 4th model runs off of compressed air that must be dried,as far as i know these models cant be used in treating air due to their design but i could be 100% wrong,i did very little research on these types generators,however along with my limited research i did talk to a cat on ebay who is in your line of work,he sells hot tub parts but he was a blabber mouth & talked all kinds of scientific sounding mumbo jumbo that pretty much made no sense,i think he was blowin smoke up my ass trying to sell me a super expensive model,the understanding i got from what little sense he made was that its the wrong application for those models.