First time GROW in Australia!

[Awesty]

Hi everyone I'm new to growing and need some help!
My plant is about 4 weeks old and going strong ( I think ) but I have just noticed a couple of leaves are turning a yellowy colour, and this morning I hav noticed a couple of ants in the pot and on the plant is this a bad sign??

As I said I'm new and any suggestions would be great!
Thanks
Here is a pic of my plant but you can't really see the leave colour but will upload some more later today.
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[Awesty]

Does anyone reply or! ??

[painretreat]

The people that would know, sort of wait awhile, expecting the poster to look around and read a bit, in the forums. So, I'll give you a little information and hope it helps.
And, they might be over-looking your post, because it is in the grow log section, instead of the plant problems forums.
Just go to Plant Problems and read the Stickies.

Fill out the Troubleshooting Form and re-post in the correct area. Some of the expert growers, aren't here everyday.:rasta: pr

[MDFinest]

Seedlings have enough nutrients to keep them going in their seed leaves(cotyledons) for about 3-4 weeks. If you dont have any feed to supplement them with they usually start showing deficiency rather quick. Is it the lower leaves yellowing?