Stephen and the grobo team are really helpful and pretty quick to respond to questions, but it seems to be a pretty common complaint for some grobo owners (Heat). I live in the Midwest where temps in the summer can get hot, but it’s been a mild summer.
My Grobo is in a spare bedroom sitting on snapnin wood flooring which was not warm (not carpet), but cool to the touch both underneath and all around the grobo.
Water temp in my unit is 76.7/76.8 degrees (tested with two devices). This won’t work or will be a poor yield at that temp. Oxygen is dissolving (DO) to fast at these temps. It’s only 81 degrees today where I live and my AC is on 74 degrees. A large fan in the room pushing cool air around as well. The spare bedroom feels colder than the rest of my home. I have some other options for relocating my grobo, but those areas won’t be much cooler if at all.
Is the Grobo utilizing evaporating cooling? Any water cooling technology? A lot of questions here on how the grobo designers intention or lack of to keep the water cool…
Doesn’t make much sense to me that the water temp is warmer than the temp in the grow space. The distilled water I used was pre-chilled to 64 degrees before entering the grobo.
32 ppm, 6.0 ph . Inside temps are 74.4 degrees, RH of 72.2, Ambient room temp of 74 degrees.
Having to buy a pump, water chiller and tubing is not ideal. Cost combined for a decent unit is roughly 400$. I made sure to to check if everything was sealed up properly like the lid being firmly in place and not lifting. The plastic guard in the back right is not flush and was one of the reasons for the rattling in my unit. It pushes the lid up ever so slightly allowing heat to enter the water storage.
I intend to wait for 48 hours after my next drain and fill before having to buy the aforementioned. Really unimpressed with lack of water temp controls in place for an automated system. After almost 3k device w/ add-ons, warranty, nutrients I kind of expected more.
Might this work without a chiller? Sure some folks have had success. However the odds are definitely stacked against a grow at that water temp which will likely only get warmer as the seed grows into a plant.
Just my two cents. I went into detail on a lot of this in my grow diary and will make it public at some point