It mixes well. All dry nutes need to be fully mixed. That is one thing I don't like about 1 part Dry nutes. They typically take longer to dissolve. Warm water is not needed for Flora Flex and it is very clean/clear looking when mixed. I prefer to let my nutes sit a few hours or overnight if possible. When you first mix it, it may be a little cloudy. Then you let it sit and re mix and it is very clear. The Calmag I use takes more effort to dissolve, but that is added first and is in balls. I like the Flora Flex a lot. Much better than Mega Crop, plus I can tailor the nutes to my needs per plant if desired.