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Above is a clump of gravel that I removed from my tank last week after noticing a white spot on the susbtrate. It didn't have any noticeable smell, even after I broke it apart to see if there was anything inside. I broke it apart completely but made sure to put all the gravel back in one spot to see if it would recombine like a sponge allegedly would. It appears to have done so. Does anyone know what this might be if not a sponge?

Hello all, I have a bristlenose pleco that is being a bit of a problem child. He (he is starting to grow his bristles) is getting aggressive with my bronze corydoras. He usually chases them when I feed the tank, but as soon as he starts eating he stops caring so much that they can even eat the algae wafer that's in his mouth. He also puffs his spikes out and chases them when I put in some zucchini for him, which the corys show zero interest in. I've been noticing a few split fins in my corys, and I have had one in a hospital tank recovering from an eye injury/infection and fin rot which I now think I can blame on the pleco. Has anyone else experienced such aggression from a BN, and do you guys think I might just be a puberty thing (like I said, he's just started growing in his bristles) and he'll settle down soon?

Based on a livebearer story

Yeah I really should get some testers, but the LFS is on the same water grid as me and should have pretty similar parameters unless they use RO water for all of their tanks or something. Is it possible that she died from childbirth, as I just spotted a fry in my tank this morning?

Sadly, she passed away. I will keep the rest in quarantine for a while (I was planning on it anyway as one of them was so small I think she'd get eaten by tankmates)

Hi all, yesterday I got some endlers (my first livebearers) however I noticed today one of the females is twitching on the bottom of the tank. The parameters are 0s across the board for ammonia, nitrite, and nitrate as the quarantine tank was re-established (with filter from another tank) yesterday prior to getting the endlers. I did check to make sure though. I don't have a pH or hardness kit at the moment but it's usually 7.4pH out of the tap and hard (lids get very crusty with calcium). I have attached pictures of the fish in question but I can't see anything other than it being a bit darker than the other females. Any idea if this is just due to the stress of moving to a new home, or there might be some diseases in these fish. Thanks in advance

My LFS is about 5-10 minutes drive from home, but also a 30 minute round trip on the bus from work so I can go during lunch to grab things like ferts if I need. Super convenient

10 gallon with 5 rosy tetras. A good friend was moving away around november last year and it wasn't practical for them to take the fish with them. I was entrusted with them and I tried my best as I learned the ropes of the hobby. Three of the originals are in my new tank.

I wouldn't worry too much about hydrostatic water pressure unless you're putting them in absolutely massive tanks. Atmospheric pressure at sea level is 101.3kPa, and you'll only add 9.81kPa for every meter of water below the surface. My gut says that they spawn/grow out in shallow waters to avoid predation from larger fish, or maybe the presence of more micro foods like insect larvae. In saying all of that, I've never bred fish so I'm not sure what my two cents are worth.

This might not be a very useful suggestion, but surely anything you can catch locally would be okay in your climate? Find out what is native to your region (and legal to catch) and see if there's anything cool looking

I think that's just another name for Malaysian trumpet snails, which that looks like

If you mean the glass test vials, then yes the cap always leaks when you shake them and it's infuriating. If you mean the actual drop bottle the chemicals come in then no, that's not normal.

It might help to strip down the filter so we can see what -if anything- is actually damaged. I don't know the anatomy of the eheim canisters but it might just be the impeller which is damaged - as running it dry means no coling or lubrication - which should be easy to replace. It might also scorch the impeller housing so it would be good to check that also.

I don't know about potassium because I haven't tested it, but for nitrogen flourish I dose double/triple their recommended amount to get my nitrates to read above 5-10ppm. Their recommended dosing is quite low to make it almost impossible to cause harm by following their instructions.

Hi, I'm struggling with my plants so take what I say with a grain of salt, but Flourish doesn't contain nitrogen, phosphate or potassium so you might have a deficiency in those macronutrients, although they do sell separate bottles for that. Easy Green has all of those nutrients in it too. Here is a guide to nutrient deficiencies As for getting them to not float, I've got no help with that because mine are absolute terrorists. https://www.aquariumcoop.com/blogs/aquarium/plant-nutrient-deficiencies