Yup, I tried sorting out the soil by adding a mixture of soap and water, and the soil absorbs water now, but im not sure if it gets to the root system. What compost do you recommend??

Thanks

Did you mist the leaves?

Why compost? Why not a great open and porous soilless mix?
Second, do you have a fan that moves the air about those seedlings..You will get leaf rot if left with too much moisture and not enough light. Why are the leaves wet?

I do mist the leaves, which is why they are wet, but I don't have a fan Mike, should I get one??

Need to be a bit careful here with UK/US use of English.

'Compost' is used a bit differently in British English - it is often used instead of 'potting soil' or 'potting mix'. It doesn't always mean the rotting vegetation sort of compost.

John Innes in UK is a widely available sterilised soil-based potting mix (or compost!) with added nutrients. It is excellent for many plants, but I don't find it good for citrus.

After many years of trying different products, I find a soilless gritty mix is best for established potted citrus but not for young seedlings. For those I would use a peat based mix such as Levingtons Citrus Compost, with some added perlite to improve aeration.

In British English, terms 2 parts coarse sand 1 part compost. will work wonders. Sand should be around a 1/16 inch diameter. I got my sand out of the street gutter. I also filled my containers to the very top with my soil so I could not water from above. This forced me to place my tree in shallow water to hydrate the soil. Last I puled the tree up to expose a 1/2 inch of root so that the tender green stem did not get killed by Damp- off (MERSA Flesh eating bacteria of plants).

Ok thanks you everyone, I will follow your advice on the soil.

Does anyone know whats causing the leaf to be unhealthy though, as then ill know whats wrong and can mend it :)

To me, the leaf doesn't look unhealthy. It may have become a bit curled at the edge along with the black tip (which is very tiny) when the soil dried out a bit too much. It seems to be growing fine now. The curl and black tip probably won't change as it happened when the leaf was smaller, so it's like a scar now. But it won't really affect the plant at this point. In my opinion.

Please do not mist your plant. Citrus in general do not need misting, and young seedlings like yours are more susceptible to fungal diseases (such as Damping Off, which Steve mentions) and misting can provide a perfect environment for the fungus spores. Better to keep the leaves dry and just keep the soil mix evenly moist, not too wet, not too dry. So in a very small container like that you just have to check the soil mix moisture content more often.

It does need more light though, the stretching of the stem shows it's reaching for more light.

I can not tell what is wrong with your tree but I can tell you in general that being a citrus tree is half the problem. If you check the different topic threads you will see tha the citrus forums have by far the heaviest use with what is wrong with my citrus tree. Citrus trees to however bounce back much better than a lot of other plants so don't worry. You'll just have a lot of minor problems that look a lot more threatening to your tree than they actually are. If you look close at my trees you will see that 70% to 90% of the foliage is twisted, warped, off color, asymmetrical, cupped, creased. It is a minority of my leaves that actually look good. They all produce food for the plant and seem to last from a half year to 2 years. You chose the right variety to grow. Lemons grow fast and can bounce back from the worst catastrophes due to their fast growth.

Thanks bard and steve, youve reassured me now:)

Especially thanks to you steve, as youve also helped on other threads before now :)))