Is Your Water Hurting Your Yields?
Picking a Filter
If buying an RO Filter, make sure it produces enough water:
|Pure Water Produced|
|Power Grow 500||up to 500 litres of pure water a day (20 litres an hour)|
|Mega Grow 1000||up to 1000 litres of pure water a day (40 litres an hour)|
|GrowMax 3000||up to 3000 litres of pure water a day (125 litres an hour)|
So, you've filtered your water... what's next?
Add Magnesium and Calcium
Magnesium and calcium are both filtered out. So to avoid pH problems, you can mix 3/4 filtered water with 1/4 tap water.
Or for best results, use 100% pure water with a good CalMag.
Grab a Booster Pump (if needed)
Reverse Osmosis filters need a water pressure of at least 40 PSI.
Tap water pressure varies, so you may need a booster pump – it’ll raise the pressure in your RO system by an extra 15-50 PSI (dependent on tap water quality and RO capacity).
For best results, aim for 60 – 80 PSI. With this pressure you'll get a better pure water to waste water ratio.
Keep spare Filters
You'll want to keep a carbon filter and sediment filter handy. Change them every 3 months to preserve the life of the RO membrane in your RO filter.
Keep it Sterile (hydro)
In a hydro system, use Silver Bullet Roots. Nothing else is as good as this stuff.
It'll kill 99.99% of all root nasties, including Pythium.
What are the signs of hard water?
Limescale at the end of your tap and on the inside of your kettle.
Does hard water affect grow lights?
You lose 10% of reflectivity over 3 months, due to mineral deposits on your lamp and reflector, if you use it with a humidifier.
Does hard water damage carbon filters?
Yes, unfiltered water clogs up filters, causing limited odour control and poor extraction while shortening your filter's life if you use it with a humidifier.
How do you test for hard water?
Use a CF meter: 0 - 3 CF (soft to moderately soft), 4 - 5 CF (medium to moderately hard) or 6+ CF (hard to very hard).
How do you remove water contaminants?
With an RO (reverse osmosis) Filter.
What does an RO filter remove?
CAC03 (Calcium Carbonate), MgC03 (Magnesium Carbonate) and Cl (Chlorine).
How easy are RO filters to use?
Very easy - you can connect them to a tap or pipe.