I'm feeding once a day, a small pinch. What do you guys think the problem is? Have I overstocked the tank? I've kept it within the points according to pets at home, I'd hate to start losing fish!
Sort of - the terta's are not the most appropriate for the edge and you added them too soon and the tank wasn't established. You need to change 90+% of the water now, those levels are dangerously high. You then need to continue changing water daily until they stay down.
It should stabilise soon then. Stop using stability I'd say and just use prime, adding bacteria is good to start but you don't need to keep adding it.
If it doesn't then the filter may not be good enough. Manufacturers always understate how big of a filter you need. Get one which is 2-3 times more than your tank needs, preferably an external one (canister or hang-on-the-back types). Eheim, Fluval, Oase, Hydor make the best. They are expensive but worth it.
@Vidar Continue using stability, the product adds bacteria. Your tank doesn't have enough hence the ammonia and nitrite, the advice above is bad. The Fluval Edge built in filter is more than sufficient, your tank simply isn't cycled. Add extra prime to detoxify the ammonia but that doesn't remove the need to change water.
@Nasher Sorry but most of this post isn't great advice, i noted you removed a load of it. Manufacturers don't underestimate the size of their filters, the fact is you do not need a massive filter to sustain loads of life in a tank. The problem is that most filters do not provide enough flow for things like planted tanks so you need to over size them and the other advantage to over sizing the filter mean you can clean it less. But if you are just running a basic fish tank you do not need a huge filter....
I saw you removed a load of other information about amounts of media that is also simply not true. More isn't better, once you get past 'enough' then any more is just a waste of money and a significant amount of bacteria is contained in the tank. Go into any old school fish store and you will see 200 fish in a small tank running on a single small sponge filter. Kesgrave Tropicals mentioned a few days ago is exactly like that.
Can I make a canister filter fit on the fluval edge without losing the lid?
You do not need a canister filter.
Unless it's been designed for it then you'll need to lose the lid. A lot of people don't use lids anyway.
If it's a small tank though, a canister will be way overkill. Small tanks are actually more difficult to look after than large ones.
You do not need a canister filter, but your right small tanks are more difficult than large ones.
The filter is a red herring, their main role is to move water around and collect debris. Moving the water around is the most important part, it makes sure the water remains oxygenated for the bacteria which is over the entire tank. They also have some artificial surface area to grow some bacteria but the majority of it will be in your tank, in the sand/gravel and all over the decorations. It is completely plausible to run a tank without a filter, all you need is a bit of circulation and enough surface area through the substrate and some plants.
you can get replacement parts for pretty much everything on these so maybe get a new impella and shaft?
was worried it wasn't going to be bright enough it's only about 40 - 50 mm wide the old light is 100 mm , but no definitely as bright.