Ok sound's like you may be light on your LR.. You should have 29lb of LR..
ie 1 lb per gallon.. You may find that your Ammonia will start to go up soon as the LR may not be able to cope. try to keep your fish numbers down until you can get some more LR. If your ammonia starts to rise, you will need to do more water changes to help your LR cope.
See how your levels go, if you start getting spikes you need more LR.
You could cure the LR in a tub with a heater and a
powerhead before placing it in your Aquarium, this would prevent the tank going through another curing cycle.
I require 55lb of LR and paying AU$10 lb hurts..