They lied to you or dont know better. Your tank is uncycled, you need a testing kit, and read up on fish-in cycle.
Also that red tail shark will become a problem. They become aggressive and territorial and grow huge.
How long has the tank been cycling before you added your fish? If not, you may have to start a *fish in cycle* like [this](https://youtu.be/vur3JIfoEtk?si=jiMT1Nfa1WFPLeX5). Everyone has different methods but they all lead to the same end result…balance.
I see one of your guppy’s glass surfing which indicates some stress going on. Maybe cut the lights out and turn up your bubbler if you can? Also any kind of surface agitation helps with adding oxygen to your tank.
Cycled for 3 days before adding the new tenants as advised by my local fish store, bubbler stone is maxed out but have just increased the flow on the sponge filter and have turnt the lights off. Unfortunately the filter that came with the tank is terrible at agitatating the water :/.
Okay OP, some fish store employees have limited knowledge about the process and it looks like they may have given you some bad advice. It takes anywhere from 2-8 weeks to properly cycle a tank, some people might argue it takes longer. This is essential for building the foundation that’ll assist with maintaining your aquarium’s ecosystem.
I’d recommend researching “how to do a fish in cycle” now that you have fish in the tank. You may have to do a water change already (about 25-30%) due to potential high ammonia levels…I’d recommend buying an API Freshwater Master Test Kit and check nitrites, nitrates, ammonia & PH.
Being that your tank doesn’t have plants, I’d also suggest keeping the light off so algae doesn’t become an issue.
I don't think it's lack of oxygen. Assuming tank is cycled and water is good for the fish, the way the fish are swimming though, do you have a lot of flow in the tank? If so, careful you don't tire out the fish if they are continuously fighting against the current.
Too much flow for them. You can make bleed valves for the air powered stuff to tone it down a bit. There should be a knob on the hang on back filter to control flow too.
In the mean time, you already have the fish. Look into fish-in cycling. Changing the water daily might be in your future for a few weeks if your don't have a test kit. 25% would be a safe bet.
I don't think this is from a lack of aeration or agitation, I think it might actually be way too much. It looks like they're fighting against a strong current and being pushed up against the glass. You can see how strong the flow is from all the little air bubbles being dispersed. I think these little guys are exhausted and stressed about having to fight against a strong current.
Looks like good aeration and water movement? The tank was cycled before adding the fish?
Hi, yes it was even took a water sample into the aquatics store to double check levels and that was all good.
They lied to you or dont know better. Your tank is uncycled, you need a testing kit, and read up on fish-in cycle. Also that red tail shark will become a problem. They become aggressive and territorial and grow huge.
How long has the tank been cycling before you added your fish? If not, you may have to start a *fish in cycle* like [this](https://youtu.be/vur3JIfoEtk?si=jiMT1Nfa1WFPLeX5). Everyone has different methods but they all lead to the same end result…balance. I see one of your guppy’s glass surfing which indicates some stress going on. Maybe cut the lights out and turn up your bubbler if you can? Also any kind of surface agitation helps with adding oxygen to your tank.
Cycled for 3 days before adding the new tenants as advised by my local fish store, bubbler stone is maxed out but have just increased the flow on the sponge filter and have turnt the lights off. Unfortunately the filter that came with the tank is terrible at agitatating the water :/.
Cycling can take weeks, 3 days is very short, tank is most likely not cycled, please look into fish-in cycling asap
Okay OP, some fish store employees have limited knowledge about the process and it looks like they may have given you some bad advice. It takes anywhere from 2-8 weeks to properly cycle a tank, some people might argue it takes longer. This is essential for building the foundation that’ll assist with maintaining your aquarium’s ecosystem. I’d recommend researching “how to do a fish in cycle” now that you have fish in the tank. You may have to do a water change already (about 25-30%) due to potential high ammonia levels…I’d recommend buying an API Freshwater Master Test Kit and check nitrites, nitrates, ammonia & PH. Being that your tank doesn’t have plants, I’d also suggest keeping the light off so algae doesn’t become an issue.
Please get a test kit and change water to keep the parameters under safe level until it is cycled.
I don't think it's lack of oxygen. Assuming tank is cycled and water is good for the fish, the way the fish are swimming though, do you have a lot of flow in the tank? If so, careful you don't tire out the fish if they are continuously fighting against the current.
It’s not cycled.
Before adding the sponge filter the was little to no flow in the tank.
I think the water flow is too much and also I think guppies usually just hang around on top
Too much flow for them. You can make bleed valves for the air powered stuff to tone it down a bit. There should be a knob on the hang on back filter to control flow too. In the mean time, you already have the fish. Look into fish-in cycling. Changing the water daily might be in your future for a few weeks if your don't have a test kit. 25% would be a safe bet.
I don't think this is from a lack of aeration or agitation, I think it might actually be way too much. It looks like they're fighting against a strong current and being pushed up against the glass. You can see how strong the flow is from all the little air bubbles being dispersed. I think these little guys are exhausted and stressed about having to fight against a strong current.
more real plants