Advice


The staff at Aggies Aquariums are more than happy to answer all your questions about the fish keeping hobby, so feel free to ask as many as you want.

Every tank is slightly different, what may work for you may not work as well for someone else so please Remember, there are no set rules to fish keeping.

Frequently Asked Questions

How often should I water change my aquarium? You need to do regular water changes to keep your aquarium healthy, frequency of water changes depends on the type and the number of fish in your aquarium. We usually recommend one 20 – 30% water change weekly to fortnightly depending on bio-load.

When the water evaporates from my aquarium, what should I do? For a freshwater aquarium you can use tap water (with water conditioner), Reverse Osmosis ( RO ) is recommended for topping up and water changing Discus (soft water fish) and Marine aquaria.

Can I mix salt directly into my marine aquarium for water changes? NO, you should not mix salt directly into your aquarium. Salt should be pre-mixed 48 hours in advance; also you need to make sure you have good water movement and the water temperature the same before adding the pre-mix to your aquarium. You need to do this because even though after a couple of hours the salt-mix is dissolved it takes up to 48 hours to dissolve all of the trace elements, minerals and ensures there is no ammonia in your mix.

How do I add fish to my aquarium when I get home? You should float the bag for 10 – 15 mins to acclimate the fish to the water temperature of your aquarium. For freshwater fish Slowly add small amounts of water to the bag over a 20 – 30min period until the bag is holding double the amount of water, this method can be used for marine fish or you can use a drip feed into the bag to slowly adjust the fish, the drip method will take longer but be more safer for your fish. Then you need to net the fish out and add to your tank without mixing the store water into your aquarium.

How often should I test my water quality? Testing should be done weekly for most aquariums; reef aquariums should be tested twice a week to ensure levels are fine.

Are betta’s (fighting fish) coldwater? No, betta’s come from a tropical habitat and much prefer to live in water temperatures around 22 – 30 degrees celsius.
Aggies Fact’s

If a fish is small enough to fit in another fish’s mouth, consider it gone!

Fish and turtles will continue to grow regardless the size of the aquarium if they are cared for properly. Fish and turtles that only grow to the size of their tank are purely mythical.

Betta’s prefer a reasonable volume of water to swim and exercise, keeping them in water volumes less than 5 or 6 litres can lead to sudden temperature & water quality changes which will stress the fish and may result in a short life span.