I am about to buy this : http://www.growell.co.uk/p/1538/Hobby-Kit-NFT-250.html but there's the option to choose between soft water and hard water. What's the difference between them? and do u think its a good kit? cheers
Because the kit includes Vita Link Max nutrients which has a soft water and hard water formula. Soft water is water with low ppm of calcium and magnesium, hard water is water that contains higher levels. If you have a TDS meter, measure the water and if you have >200 ppm, it is hard water. If you decide to go with filtered and/or RO water, get the "soft" option.I am about to buy this : http://www.growell.co.uk/p/1538/Hobby-Kit-NFT-250.html but there's the option to choose between soft water and hard water. What's the difference between them? and do u think its a good kit? cheers
Depends on the geology of the area. Where I live the water comes from a reservoir and isn't really that hard. A few towns over, most of their water comes from ground water with a lot of limestone, so the water is ridiculously hard. If you have a lot of limestone in your area, there is a good chance you have hard water.^thx for the advise, but i dont have a TDS meter, so in ur opinion whats the most used water in populated areas?