Firstly, the tank itself is approx 2.5ft by 1.5 ft by 1.5 ft.
A friend was having trouble keeping the fish alive?
When the tank arrived they had white gravel stones that were covered in red, my mother-in-law has a marine tank and she has plenty of healthy algae but something told me this wasn't right so as soon as I received the tank I done a 75% water change, put the fish in a bucket with their original water and emptied the tank, the filter was overflowing with crap! The sponge could not be seen for algae and the bio rings were subdued by it. So i cleared the lot out and cleaned all the gravel following advice on here, I bought some new gravel (blue) but worried that it would be too different for the fish so I soaked some of the gravel in a tiny bit of bleach and water left it out in the sun in a bucket rinsed it off and added some of the white gravel back in. The fish seem a lot happier now, I have used API Aquarium Salts to help the live bearers as advised to do so by my local water gardens.
In the tank I have:
* 10 x Neon Tetra's (I added these as the previous owner had one all on his lonesome :()
* 2 x Swordtails
* 2 X Cory Catfish :)
* 2 X Tiger Plecko's (I'm not sure if its a good idea but they seem to keep out of each others way)
* 2 X Dalmation Mollies
* 1 X Black 1 X Silver Mollies
* 1 X Rummynose Tetra
* 1 X Golden Barb
* 1 X Filiment Barb
* 1 X Bala Shark, who's doing great atm, the filiment barb is keeping him company - If i got rid of the shark I think I'd need to send the barb with him as they actually get along haha!
I just want to know what to do to keep them happy, who to swap change and get more of.
I have added the Neon's as there was only one, and a couple of mollies and the cory's all of which were quarantined.
As for the Mollies being pregnant - I don't really want the fry to die as I'd feel awful. However, I don't want to keep them and have my tank overcrowded and overpopulated. I was thinking of buying a second tank to keep the fry in and to rear them but then I'd need to cycle it first :(. I dont mind buying things to help them.
This weekend I'm going to buy Brine Shrimp eggs etc and see about breeding them??? As most of my adult fish will eat them and the fry will eat the babies. I am also going to buy some caves and live plants as I only have a set of pillars, a tunnel a bridge and a rock which will not provide the fry with enough coverage should i not catch the mollies in time.
Also I am going to buy a water testing kit as i dont know how the water is atm they all seem happy but im still doing wc every 4 days to make sure its not too bad for them.