Shekoi's 15 gallon uk

15 gallon uk (24x12x12 inches) with dark blue background, 1.5inch river gravel for substrate, 2 pieces of bogwood and live plants.
Temperature is 24C = 76F.
Kept at Girlfriends parents house.

FISH:
9 Neons
3 Platies (1 male and 2 female)
1 Zebra Danios
2 Corydoras Sterbei
2 Peppered Corydoras

PLANTS:
Java fern (microsorium pteropus) on bogwood
Amozon sword (enhinoclorus amozonicus)
Vallisneria spiralis
Dwarf Ambulia (limnophila sessiliflora)

EQUIPMENT:
Interpet IPF DUO 2
Small internal filter, not sure of make
Interpet 100W heater
Life-glo 15W tube lighting (1WPG)