What is Reddit's opinion of Bluelab METCOM Combo Meter for pH, Temperature, Conductivity (Nutrient) in Water with Easy Calibration, Digital TDS Tester for Hydroponic System and Indoor Plant Grow, Pack of 1, White?

From 3.5 billion Reddit comments

this is the one i use; i couldn't recommend it enough: Bluelab METCOM Combo Meter for pH, Temperature, and Conductivity Measures, Easy Calibration https://www.amazon.com/dp/B003PD2N8Q/

try to find it locally. they'll often give you a deal at hydro/fish shops if you pay cash, at the very least they'll match the online price

Those are cool but the one Bluelab makes with a separate probe is better and if you dry it out you just replace the probe. I went through 3 pens before breaking down and buying their more expensive version

This particular meter has saved/earned me over 50k since 09.

https://www.amazon.com/dp/B003PD2N8Q/ref=redir_mobile_desktop?_encoding=UTF8&aaxitk=55c62f8279401e7a98e8bdfda7c992aa&hsa_cr_id=5899983330501&pd_rd_plhdr=t&pd_rd_r=2f53a137-cdf6-4241-9f5e-1e353e9ab8ce&pd_rd_w=fbh6c&pd_rd_wg=...

https://www.amazon.com/dp/B003PD2N8Q/ref=redir_mobile_desktop?_encoding=UTF8&aaxitk=55c62f8279401e7a98e8bdfda7c992aa&hsa_cr_id=5899983330501&pd_rd_plhdr=t&pd_rd_r=f8754a43-6b35-4bfd-9878-f325a73c14f2&pd_rd_w=ukaOB&pd_rd_wg=...

Having an arduino do this stuff for you would be pretty cool but imo it's a lot of complexity for something that is actually very simple. You can get your own PH/TDS/EC meter, check it once a day or every few days, and add water or fertilizer or both by yourself via dropper. It would make more sense to use intelligent automation/assistance if the system were much much bigger.

Recirculating pump is helpful, but if you get a good air stone and a good air pump with high flow the bubbles will aerate the water and churn it over and mix it very well and very quickly in such a small container.

I use one of these https://www.amazon.ca/Bluelab-BLU2300E-compteur-conductivit%C3%A9-temp%C3%A9rature/dp/B003PD2N8Q/ref=sr_1_3?dchild=1&keywords=bluelab+combo&qid=1599330449&sr=8-3 and they are pretty cool, but they are so expensive and the probes don't last nearly as long as I feel they should for how much they cost.

When I said the challenge is in feeding the plant I didn't mean the physical process, putting one liquid into another liquid is very easy, but knowing which liquid, and how much of it and why is as much of a science as it is an art form.

There are of course many guides on good starting mixes, if you are lucky this will suffice for a very long time, but once you get a single issue such as over fertilization, or root slimes, or algae or any of the other myriad of problems one can get in hydroponics you'll have your work cut out for you!

But it's an awesome hobby! As as a general rule, "an ounce of prevention is worth a pound of cure".

Bluelab METCOM Combo Meter for pH, Temperature, and Conductivity Measures, Easy Calibration https://www.amazon.com/dp/B003PD2N8Q/

this is what i use. five year warranty. accurate AF, you can let it sit there while it mixes and it gives you temp of water, ec, and ph with different options for ec or ppm, etc. wouldn't trade it for a thing. unless that thing was hooked to an RO system and auto fed my plants.

I use this one. It works great.

I saw this one, and then there was a pen model for about $70.

https://www.amazon.com/gp/product/B003PD2N8Q/#customerReviews

​

This bluelab has 10% 1 star ratings.

I use this one but I'm sure the cheaper one would work good too.

Go big or go home

Bluelab METCOM Combo Meter for pH, Temperature, and Conductivity Measures, Easy Calibration https://www.amazon.com/dp/B003PD2N8Q/ref=cm_sw_r_cp_api_glt_fabc_PWAK446DMEWAFN14X6J3?_encoding=UTF8&psc=1

You can not beat a quality Blue Lab combometer.

Once a month, it reminds you to calibrate.

https://www.amazon.com/Bluelab-716441-Combo-Meter-Germination/dp/B003PD2N8Q/ref=sr_1_5?dchild=1&keywords=blue+lab&qid=1620767093&sr=8-5

I've been using the Bluelab combo meter that was recommended to me by a couple other growers I know and trust.

If you want another reliable solution for a bit less money you can get a good pH pen and EC meter separately as well.

https://smile.amazon.com/gp/product/B01ENFOHN8

https://smile.amazon.com/gp/product/B073713G5F/

This one https://www.amazon.com/dp/B003PD2N8Q/ref=cm_sw_r_cp_apa_fabc_2Pq1Fb4CVPMPF ?I am just trying to make my life easier and my plant happier) because I don't really trust my https://www.amazon.com/dp/B06XKMH86J/ref=cm_sw_r_cp_apa_fabc_NRq1Fb3Y6730Y?_encoding=UTF8&psc=1

GH ph control kit coming the 26th.

Arriving Wednesday: Bluelab 716441 Combo Meter for Plant Germination https://www.amazon.com/dp/B003PD2N8Q/ref=cm_sw_r_cp_apa_i_4dtpCbERMW1C4