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post #1 of 7 (permalink) Old 09-19-2015, 02:08 AM Thread Starter
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Love my little 60L (16G) tank, 10 fat happy black neon tetras, about 7 fat cheeky pygmy corydoras (I think I lost a few to natural selection for stupidity on their part early on - got stuck in filter, stuck under a rock etc), 2 sparkling gourami and about 10 adult waterhouse snails (native Australian ones). Planted out with a whole lot of stuff (forgotten all the names), some rocks to hide/ grow algae, golden vine wood for the same reason. Organic potting mix substrate with gravel on top hence the tannins in the water (the snails like to mix up the layers) but everyone is happy, waterhouse snails are breeding finally (they're live bearers so don't over-run the tank). I've purposefully let the algae and cyanobacteria grow as the snails eat it and so far haven't had to do a water change in a month! Just top it up when the water level gets low. I understand with planted tanks that you get uninvited guests from store bought plants - I have a crop of ramshorn snails that I am learning to live with - they're too much work to manually get rid of and the waterhouse snails keep the numbers down by eating most of the food. My question is.... I was cleaning out the filter today and found a leech!!!... How the hell did a leech get in my tank!?!?! the tank has been set up for >6months and apart from adding the gouramis about 2 months ago nothing new has gone in the tank
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post #2 of 7 (permalink) Old 09-19-2015, 02:12 AM
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Came in on a plant or rock. They frequently stay hidden in light so it could have been in the gravel for months before you saw it.

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post #3 of 7 (permalink) Old 09-19-2015, 02:14 AM Thread Starter
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Thanks Do I need to do anything about it or just keep an eye on things?
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post #4 of 7 (permalink) Old 09-19-2015, 02:25 AM
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Every time you see one, kill it. They are not a parasite you want to leave in the tank.

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post #5 of 7 (permalink) Old 09-19-2015, 02:31 AM Thread Starter
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yeah it's gone, just wasn't sure if I need to treat the tank or remove them when I see them
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post #6 of 7 (permalink) Old 09-19-2015, 02:45 AM
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Some can be plant leeches, which only eat only dead plants, but some can be blood suckers and can kill your fish and suck on you.

You already got it out so, yep, should be it, I don't think you need to treat the tank, but I am not 100% sure.
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post #7 of 7 (permalink) Old 09-19-2015, 02:50 AM
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I would do a heavy search through your tank for more and remove them immediately. Leeches can cause major problems for fish. They drain them of blood and leave open wounds on fish which can lead to infections and death. They release an anticoagulant that will make it harder for the fish to heal. Leeches are no good!

Last edited by somewhatshocked; 10-26-2015 at 07:11 PM. Reason: .
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