House & Garden Growers Journal 2017 May 2017 | Page 41

3. Test, test again and calibrate… regularly!
A reliable and trustworthy pH and EC tester are your most essential tools. These are scientific measuring devices,
treat them carefully and always remember to clean regularly. Discuss the most appropriate model with your local
hydroponic retailer and try to stick to recognised and reliable brands (we recommend Bluelab or Milwaukee). It’s
essential that you calibrate both pH and EC devices at least once per month.
Always remember to keep your pH probe moist; if it dries, it dies!
4. Understand what you’re giving your garden.
It might sound straightforward but always read the label and research the products that you decide to feed
your garden. If you’re growing a consumable crop, always ensure you utilise healthy and food/technical grade
ingredients. It’s worth researching the different hydroponic nutrient brands and products to understand their best
practice usage.
GENERAL MIXING INSTRUCTIONS
• Fill Reservoir - we recommend to check the EC/PPM and pH level to know and understand your base water.
• Add Base Nutrient A - mix thoroughly and let stand.
• Add Base Nutrient B - mix thoroughly and let stand.
• Check your EC/PPM levels. (Add more nutrient or water till the desired EC/PPM level is reached)
• Adjust pH: For Cocos / Hydro A+B = pH 5.8
For Soil A+B = pH 6.3
• Add appropriate additives and stimulants.
• Check your EC/PPM levels and adjust pH.
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