Select from options: Continue writing the next sentence.

How to mix hydroponics nutrients
Know what's in your water.
Send your water to a lab to be tested, if you can. With good, " soft " water, you'll be able to add any nutrients your plants need for their optimal growing season.

Options are: - Your water should be warmer than the water you've heated. Optimize the water by incorporating added water.; - If you don't have access to water, have your water sample collected with a sample taker and water can be mixed quickly and easily. Learn how for hydroponic nutrient boosters.; - With " hard " water, you may need to use reverse osmosis methods to filter out any unwanted heavy metals present in your water. You can also use a dissolved solids meter to check your water regularly.; - Plain water is just a mix, while if you choose to grow hydroponic plants, you'll have to try using natural, " freshwater " water. Hydroponic plants can adapt to different water levels if you choose to grow them in dry soil and possibly even form a disease.;
Answer:
With " hard " water, you may need to use reverse osmosis methods to filter out any unwanted heavy metals present in your water. You can also use a dissolved solids meter to check your water regularly.