We have just set up our new tank and its about a week old now, see picture below, we put some plants in on Sunday and already they are looking eating and possible diseased as its has spots on and a lot of the leaves are dying (he smaller plant) and now it seems like the larger one is gong that way too.
The tank it set at 24/25 degrees centigrade had all the safe start chemical in, and also put in the plant fertilizer as the aquatic shop recommended.
1. What are we doing wrong, only put the plants in after 4 days?? Could it be something that has come from where we got them?
We have also noticed this evening that there is some little worm thing swimming around, its small and cream in colour and you would miss it if you didn't notice it wriggling
2. Does anyone know what it might be? Is it something to worry about?
Finally we have decided to go for a Male Betta as think this would be the most attractive fish, is it better to keep him on his own or can we put another 1 or 2 fish with him?? Do Bettas suffer from being lonley

How long does it take to cycle a 30 Litre tank about a US 7 gallon Tank?
Below is a picture of our tank...................hopefuly the picture on my signature.
Any help thoughts and ideas are much welcome, from the UK by the way.
Thanks