What is Reddit's opinion of Hydrofarm APCEM2 Autopilot Desktop CO2 Monitor & Data Logger, Data, White/Blue?

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I bought this a few years ago. It's a little clunky to use, and there's no remote sensor, so maybe check around for newer or cheaper stuff, but it works fine.

Yea, there are home commercial products that give you a warning light as well, I own this one: https://www.amazon.com/gp/product/B01FYWU2IS/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1

I think home automation enthusiasts could rig up something to do this (like at r/homeassist), but the autoclosing part of the fan could be tough

I lost a canister in the house once. I bought this:

Hydrofarm APCEM2 Autopilot Desktop CO2 Monitor & Data Logger, Data, White/Blue https://www.amazon.com/dp/B01FYWU2IS/ref=cm_sw_r_apan_glt_fabc_VJX1R59NVHYYY99WS8S5?_encoding=UTF8&psc=1

It is a 85 dollar co2 detector. Mine runs off an usb battery pack and I move it around my kegerator and I peak at the reading as I pass by. It is great peace of mind.

I had this kind of problem once. It really freaked me out losing 20lbs of co2 in my house. Never again.

I bought this: https://www.amazon.com/dp/B01FYWU2IS/ref=cm_sw_r_cp_apa_fabc_8sk7FbHD8SMFH?_encoding=UTF8&psc=1 I keep it around my kegerator and when i am doing new connections I put it inside the kegerator. It can last a full week or more on a USB battery pack I have for my phone. If it goes over 2000 I know I have a problem to diagnose. I wish the alarm was configurable, but so far it has caught a problem or two before it became a real problem.

Something to consider at least.

I highly recommend picking up a co2 monitor at the least. That way you have some idea where you're starting and if you're hitting your target ppm level. This is one of the cheaper ones I've seen https://www.amazon.com/Hydrofarm-Autopilot-Desktop-Monitor-Logger/dp/B01FYWU2IS

Levels over 4000ppm are considered unhealthy for humans. If you were to hit even higher levels you would start feeling tired, and could suffocate and die. I just picked up a trolmaster hydro-x with the trolmaster co2 sensor. It's very expensive though compared to that hydrofarm monitor I linked. The trolmaster can control not only co2, but almost every environmental device in your grow room, and it can all be done remotely with an app. I previously bought an $18 co2 monitor off of ebay and I can't even get it to work, so stay clear of those cheaper ones.

I have used several models of CO2 monitors and found most to be unreliable. This is theonly one I use now. It seems to be very accurate. It also reads very fast and can sit in the Martha.

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https://www.amazon.com/gp/product/B01FYWU2IS/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

I tried several. Amazon Prime return policy is great! I settled on this one...https://www.amazon.com/gp/product/B01FYWU2IS/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1

Works pretty good.

I went through a couple of co2 meters until I found this one. Some of them don't work very well but this one is great. A little on the expensive side. https://www.amazon.com/gp/product/B01FYWU2IS/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

have you checked this out?

This one might be worth a look:

https://www.amazon.com/Hydrofarm-Autopilot-Desktop-Monitor-Logger/dp/B01FYWU2IS/ref=sr_1_5?crid=1N4NTIIG4EAXH&dchild=1&keywords=co2+monitor&qid=1630269270&sprefix=co2+m%2Caps%2C185&sr=8-5

Actually, that's totally incorrect. Set up a CO2 monitor and watch the levels. You'll be amazed how much the CO2 levels rise and fall in your room.

The monitors are fairly reliable.

https://www.amazon.com/Hydrofarm-Autopilot-Desktop-Monitor-Logger/dp/B01FYWU2IS