My plant has got some Problems. The top leaves are...

Hi @UserNo420! I'm afraid you're having broad-mites / russet-mites, these invaders are very hard to spot, they usually expand in cold environments, and make the leaves look like this. In this scenario I would use neem-oil, in your waterings + as a foliar spray. Mix 12~15 drops of pure neem-oil for 1 liter of water, add a teaspoon of soap for the foliar spray to stick onto leaves (not necessary in the medium waterings), and see how it goes after a few days of use. I'm afraid it's a bit late to get rid of the whole colony, if you still have this issue in a few days, I'd recommend to look for predatory mites, ask your local growshop if they have those or if they can order it for you. Hope this will help, keep us up-to-date and happy growing 👊

Phosphorous deficiency would show on the older leaves, not the newer foliage. I've seen leaves have weird symptoms due wrong pH, there could be some of that here. Also, I think your plant is suffering due the low temperatures. It also looks over watered, 200 cc of water a day can be quite a lot for that temperature, where the plant growth is practically zero.