Is Your Water Hurting Your Yields?

Is Your Water Hurting Your Yields?

Keith
Keith
20 Nov 2015
RO Water RO Water

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)  

What Next?

So, you've filtered your water... what's next?

green booster pump green booster pump

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.

green booster pump green booster pump

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.

green carbon block filter green carbon block filter

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.  

Silver Bullet Roots Silver Bullet Roots

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. 

Roots inoculated with Mycorrhizal Fungi Roots inoculated with Mycorrhizal Fungi

Add beneficials (media)

With impurities gone, there's nothing left to restrict microbial activity. All the biological stimulants you know and love really come into their own.

We're talking about the likes of Charge, Biosys, Mykos & Mammoth P.

The Facts

green booster pump green booster pump

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.


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Keith
Keith
About the author

Keith looks after our stock and staff. He's a bit of a hippie and has the hots for chillies. If you want to grow them, ask Keith how it's done.

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