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Hi, I have 2 guppies that are at the surface of the tank gasping for air. One is a bit discoloured -yellowish on his back. Both have had what I assume to be poos hanging out of them. One has had this several times over the last week or so. Their gills look red and obvious. I've been wondering...

It's a couple of months since I started this thread and I'm still struggling. In early Feb we gave up on fishless cycling after 2 months with no progress whatsoever and got 3 male guppies. I've been testing the water then doing a 60% pwc about twice a week. Every time I test I get 0.25 ammonia...

OK, so I should be fine to put that ornament back in then?

Once my fishless cycle finishes, I'm thinking of getting the following fish: 3 male guppies 5 cardinal tetras 3 panda corys Does that sound OK for a 15 gallon (60 litre) tank? Any comments/suggestions welcome! :fish2::fish2::fish2:

I reckoned the cycle wasn't going anywhere anyway so I wouldn't be losing anything - hope I haven't just set myself back even further! The cartridges were one of these: Marine Bio-Clear Slim Filter Goldfish Cartridge 3pcs by Marina | Pets at Home and two of these: Marina 360 Bio-Carb Slim...

The bottle definitely says ammonia on it so should be the right one. I've now done (almost) 100% water change - I didn't try to empty the water in the bottom inch or so among the gravel. I've removed the suspect ornament, which felt really slimy. The other two ornaments are fine. I've replaced...

Tank, filter and everything else was new and I rinsed it with tapwater before setting it all up. Temperature was 26C but I turned it up a bit this morning. Now having trouble reading what it is on the strip thermometer, I think I need to get a better thermometer. The full story is that it took...

If the ammonia was a little above 4ppm, would that have stopped the bacteria from developing? It was definitely closer to the colour on the chart for 4 than 8 but I can't be sure if it was 4 rather than say 5? But surely just a small difference at that level wouldn't matter. I've been reading...

API test kit. It's a hang on the back filter and the tank does have a lid. I'll take a photo and post it later on today. Hoping you'll be able to work it out for me - I guess there's nothing obvious so far.

No, just plastic plants. I was away for a week.

Yes, I added the water conditioner before putting the water in the tank.

Sorry, that should have been 7.2! I only added more ammonia once when it got down to 1ppm (after 10 days) and then a week ago just before we went away on holiday (it had only gone down to 2ppm by then). The first time coincided with the single positive test for nitrites I have had. No water...

Thanks for the support - much appreciated! Tap water - ammonia 0, nitrite 0, nitrate just slightly above 0, ph 2.5. I don't have any of the tests you mention for the tank. Tank is 60 litre (15 gallon), and measures 2 foot by 1 by 1. The filter is the one that came with the tank - a Marina slim...

Thanks for the responses. I added ammonia back up to 4ppm last Thursday since I was about to go away for a week. When I got back today it was still 4ppm with 0 nitrite. That's a month I have been trying to cycle and seem to have made no progress (apart from a brief day or so when there was a...

I started my fishless cycle on 2 Dec, adding ammonia to 4ppm. By 11 Dec it had dropped to 1 ppm and I topped up to 4ppm again. Nitrite was now 0.25ppm. Since then I've tested every few days and ammonia has slowly gone down to 2 ppm. Nitrite was constant at 0.25 ppm but today is showing 0. What...