Aquatic Plant Central - View Single Post - How to balance NPK, Ca, Mg and micros

BryceM · 07-18-2007, 04:10 PM

I'd also caution against relying on city reports. Most cities have more than one water source and the exact chemical composition of the water can vary dramatically. They often use a combination of wells and surface water sources and they sometimes switch seasonally and sometimes even in a single day. The reported lab sample usually represents only a given point in time for a single location in the system.

07-18-2007, 04:10 PM	#43 (permalink)
BryceM Administrator Join Date: Nov 2005 Location: South Central Idaho, USA Posts: 4,262 iTrader Ratings: 42 iTrader Positive Rating: 100% Plant Points: 178534	Re: How to balance NPK, Ca, Mg and micros - new experiments I'd also caution against relying on city reports. Most cities have more than one water source and the exact chemical composition of the water can vary dramatically. They often use a combination of wells and surface water sources and they sometimes switch seasonally and sometimes even in a single day. The reported lab sample usually represents only a given point in time for a single location in the system.