New to all tis, trying to grow on my terrace. Don't know why it doing this. Can anyone tell me how to do this? I feed them compost of sea and bat with

rain water sounds like a good idea but depends on pollution in your area. It is often acidic and contains heavy metals and shit that's not good despite the mantra that it is "natural." lol. Anyway, to have more control over your pH i'd avoid rain water especially if you live within a couple hundred miles of any urban center, which most of the world's population does. Talk to someone that owns a pool. Rain water is nasty shit that often fucks with chemistry of the pool. Looks like a nitrogen deficiency on the first one and a potassium issue on the second one. While they are ready for a transplant unless they've been in that pot for a long time (maybe 2 months or more?) and stopped growing, it's more likely the fertilizer formula than a small pot / rootbound issues. You should up-pot soon, though. figure they can remain in a pot 1 month per gallon size. Going slightly over is no problem, but eventually will get rootbound, Growing in the window sill isn't providing much DLI, so you don't need as much fertilizer as others who provide significantly more DLI. Something to consider when looking at other people's behaviour. I think your soil is just running out of it's frtilizer charge and you need to supplement a wider range of nutes than you did before. A full diet instead of just the 2 products you listed.

Hot soil. So, with the pot being soo small. When you feed. The flow is headed to the end. Where roots built up. And she's suckin too much. Open the sub up and make a root ball in the middle of a bigger pot. This can be done by simply uppotting. Keep notes low until she evens out. Feed low feeds once a week. Don't make it complicated. Less is more when growing weed. If a brand of nutrients says use 2ml/1L use 1/2-1/3, etc!

Pots are too small and plants are over watered too. Water once, then do not water again until the top 2-3cm (one inch) has dried out completely. The blog wants information.............the more info, the better the diary.

Wrong soil, wrong feed, too much water ( no wet/dry regime ). Pots will be too small soon, that will bring more issues.

the pics looks like N deficiency and K deficiency. https://420life.com/wp-content/uploads/2021/10/Marijuana-Leaf-Deficiency-Chart-scaled.jpg This leaf chart is a good option for trying to decode things. Your diary is a bit lacking and no idea what sea and bat compost is. Maybe try uploading a photo of it? Guessing some fish/crustacean meal type thing with guano? Might not be hitting all the boxes on a complete fertilizer feed for the plants. Might need to add in some liquid feed for a quick fix. Pots looks like they are to small and need a transplant, maybe into better medium with extra perlite in the mix. Lots of loss on the lower growth witch will slow down overall rate of the plant, likely why they are small for 5 week old plants. Don't pluck their leaves if you have been. I think you need make a solid plan before growing more and read up a bit on fertilizers and mediums. If by blog you mean your grow diary, It asks a bunch of thing. does not mean you need to fill it all out. Just do what you know. mscm and ppm are levels of things dissolved in water. sunlight hours are exactly that, how many hours is the light on. It should not be asking that for outdoor diary but GD is borken a bit.