Stocking ideas/safe mix?

[ElegantScents.co.uk]

Hello!
I have a 280L/61G planted tank.
Its finally come through our fish in cycle.
PH 8s generally around 7 and GH around 8.

Currently I have.....
1 golden plec
6 gouramis
4 rainbow fish
8 tetras
4 mollys
2 bamboo shrimp
2 platys. (2 died in cycle)

Fish all seem happy and are very active.

My question is... I feel like I need to add more to the platy shoal.
Does anything else need tweaking?
Can I add any more fish?

Thankyou for your help

 

[Colin_T]

Your GH is too low for mollies and platies and some rainbowfish.
Mollies need a GH above 250ppm and platies, swordtails and guppies need a GH above 200ppm.

Some rainbowfish come from very hard water (GH above 300ppm) and some are from softer water. Most rainbows do best in water with a GH above 200ppm but it is dependant on the species.
What species of rainbowfish do you have?

What sort of gourami do you have?
What species of tetra do you have?

What are the tank dimensions (length x width x height)?