well first off pH isnt something to worry about with ORGANIC soils, as they have beneficial life and other ammendments that naturaly balance pH so you dont have to, soil-less mediums and hydro systems need to pH their water/nute solution before feedings.
ok posting pictures, when posting a reply click the go advanced button, there is then a paperclip button at the top of the text box you type in, click it and it will pop up a window to search for attachments to upload from your comp, you may have to resize the pics first inorder for them to fit the required size for the forums, not that hard to figure out using paint, i simply take my pics which are always slightly larger then required so i scale down to 75% orginal size and it always fits the req size.
uhmm lets see next item for discussion... you said your red/green color blind well that blows big time especially with this plant that shows shades of green and possibly red or orangeish hues.
ok so most likely again without pics hard to say but yellowing tips defently means over feeding, the tips are burning from too strong of ferts, basicialy they cant take up all the food your giving them and the yellowing tips are like your pants buttons exploding off after eating way too much food... lol so back off the nutes slightly, also as for the shades of green, for you being color blind this part sucks, basically leaves are green, lol duh, but if the leaves are a DARK green with yellowed tips the plant has an abundence of nitrogen as well as too strong of nutes, if the leaves are new growth they will always start out a light green and darken with age, also if the leaves are developed (not new growth) and it begins to lighten in color and slightly yellow around the veins of the leaves youve got a deficiency of nitrogen thus saying either you are underfeeding (and the yellow burnt tips debunk this idea) or your over feeding and the plant has locked out nitrogen due to too strong of nutes for a prolonged period of time or unbalanced pH thus locking nitrogen out from being avaliable for consumption. again as you can see from just variations of green without pics its like spitting into the wind as THG said. also what nutes are you feeding her and how much per gal of water? are you following the instructions on the nutrients? sldo your soil you said it was a compost soil... is it organic? meaning no added slow release chemical nutes in the soil and since its compost ill take a stab in the dark and say there is a good chance that there are some kind of bacteria and/or fungi in the soil, these are the beneficials that make organic growing so awesome, they do all the digestion of nutrients so the plants can take in the nutes much easier, they also help with pH balance, and should note that chemical nutes will kill the beneficial life in the soil. and im assuming your using some sort of chemical nute, and i PRAY its NOT Miracle Grow...
you may also want to look into a few upgrades, those cfl bulbs are going to kill yah, they are far more expensive to run then a 4ft 4 or 6 bulb T5 High Output fixture and will also put out less heat. id also get that fan thats blowing on the plants out and replace it with an oscillating fan, that way there are no dead pockets of stale air not being moved around.
ooh and the curling of the leaf tips... is it just the tips or are the whole leaves curling up like a taco? tacoing is a sign of over watering. also i forgot to mention since you are watering every day since they are in such small pots you dont have to add nutes in with EVERY watering, make it every other watering and use just plain water inbetween nutes.
