Raising Kh

My current parameters are 2Dkh and 13Dgh. I have Ca and Mg, but it seems they only effect the gh. Would I get any coloration benifits from raising my kh and how is that done?

This has recently been brought up because of issues I am having with ludiwiga guinea. Although I am growing trithura sp., Tonina fluviatilis and Pogostemon Stellatus narrow leaf (albeit with little color) just fine.

 

Thats kind of what I was thinking Jeff. the lights are as follow. (2) 6500k coralife pc's in the 24" coralife and (1) coralife 6500k t5no and (1) 10000k coralife t5no in my 30" coralife t5no fixture.

I cant wait to get my catalina 4x24w t5ho fixture. I will run it with theit 6500k and 10000k combo at first but then switch to the giesman midday and aquaflora combo (not sure on the names im at a different cpu with diffeent book marks, ill check that when im back at work0.

 

Believe me I am trying my best. If you want to see some pics of my plants for reference check out this thread over at TPT. I actually turned down my co2 a bit due to fish gill movement.

Also a side note question. I recently (sunday) trimmed my tonina fluviatilis for the first time. The tops replanted are looking nice but the bottoms are showing an almost chlorosis like defficiency, their leaves are getting sirt of transparent looking. Is that just the nature of the beast?