Having the right nutrient solution is critical for your hydroponic system as it's the sole source of nutrient. While the importance of the solution can't be understated, it's also very easy to mix and test your solution these days.
Just follow these basic steps and you'll have your nutrient solution all set.
See why pH is important to manage at Captain Hydroponics or just check out the latest hydroponic tip.
• Fill the vial half way with tap water.
• Squirt 5 drops of pH indicator into the vial and tap the side.
My water is probably about 8.0. This is very common in the US.