Lol shes not wilting, when I took Fiona out and put her on the windowsill to enjoy some natural light she cleared right up. Im thinking it was a heat problem or something, but thats sorted now.

Leaf curling up can be a sign of a Magnesium (Mg) deficiency caused by too low of a pH level. Magnesium deficiency will show as a yellowing (which may turn brown and crispy) and interveinal yellowing, beginning in the older leaves. Interveinal chlorosis - in laymans terms, yellowing - will start at the leaf tip and progressing inward between the veins. It could also be a sign of excess heat and humidity in the grow room.
You need to check and adjust the pH level (Im sure youve done this). When the pH is not at the proper level marijuana will lose its ability to absorb some of the essential elements required for healthy growth. If youâ??re growing in soil, Magnesium will begin to be locked out at a pH of around 6.5 and lower, in hydro it starts at 5.8 and below. If the pH is correct, then add 1 teaspoon of Epsom salts per each gallon to your water. Or, if you prefer to foliar feed them, add a ½ teaspoon per quart to a spray bottle.

Tell me if that worked or not! Epsom Salts ban be bought at a chemist, I bought a big 250g tub for about £2 (around $5)