[APD] K+ Deficiency Symptoms - Scott?

["Tom Wood" <tomwood2 at flash_net>]

SH: "Although 1-2 ppm is not far off from what a few seem to 
recommend for K. My plants get mad if I don't give them about ten 
times that amount."

Scott - When your plants "get mad" do they show the potassium 
deficiency symptoms like these:

http://www.thekrib.com/Plants/Fertilizer/nutrient-deficiency.html

"Potassium: Old Yellow areas, then withering of leaf edges and 
tips"

"Potassium: Small dead areas appear in older leaves.  These can 
start like little pinpoints and grow.  In some species, like 
Ceratopteris, the older leaves stay green while the little dead 
spots grow.  The new leaves are reduced in size and leaf area, 
looking a bit 'singed'.  In other species the older leaves can 
turn yellow before they die, but they do not have green 
persisting along the major veins as in magnesium deficiency."

The reason I ask, is that I'm pretty sure I'm way overdosed on K+ 
and I'm going to stop dosing for a while. I remember some recent 
'haze' episodes in the water after water changes, which is when I 
dose ferts. I'm wondering if there is so much K+ that it is 
precipitating itself or other things out of the water. I'll start 
K2SO4 up again when -my- plants "get mad". ;-)

TW 


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