The Hanna Instruments GroLine Monitor HI981420

[@circle4922]

Haha, 2017? It's almost 2020 and I can't even find this product.

[@harrysibben7583]

It is a specialty product. And therefor not sold by every growshop. I have one and it is really handy to keep track of PH and TDS. It gives you the opportunity to look back why leaves turned a different color as you can go back 30 days and safe and store the data. Analyse it and all that. I have got a HD camera and this monitor and it gives so much information. I would never go back.

[@WalterRoseAK]

It's 2023 and I got mine in downtown Los Angeles - I love it!