Copyright @ 2011 PurGro Electronics, LLC
All Rights Reserved
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Removable Dosing Containers
Your Dosing Containers use O Rings which will eventually need replacement. You can get them from
us, Lowe’s Home Depot, Grainger, just about anywhere since they are standard AS568A-012, Buna-N
O Rings, 3/8 ID, ½” OD 1/16 thickness. We recommend replacing them once a year just to be
neurotic, although it’s likely they’ll last many year in normal service.
pH
pH sensors, like batteries, are truly awful, fussy bits of 1930’s technology. A pH sensor is, in essence,
a battery made with silver and silver chloride with an open circuit voltage that varies with the solution
it’s dunked in. Like all batteries, they wear out. Here’s how to keep yours in top shape:
•
Clean the probe every three months. Use a commercial cleaning solution and a toothbrush.
•
Recalibrate the probe every three months, and you’ll always read accurately. We recommend
verifying
calibration rather than just redoing it since the EVO probes don’t drift much. Atlantis
Hydroponics ran almost TWO YEARS (and counting) without having to recalibrate.
•
Replace every year. You can wait for it to fail in three, or just replace it. It’s cheap insurance.
pH probes are so cheap, and a bad one can cause you such problems, that most of our top growers replace
them after each harvest. For $25, you’ll spend more money cleaning up the shop.. Sounds like overkill, but
bad pH probes are the bane of hydroponic growing and they really are cheap enough to treat as disposable.
TDS
Conductivity sensors just need to be cleaned every three months. Check calibration then, too.
Содержание GroBot Evo 3.12
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