Search found 907 matches

by dw1305
Mon Jan 20, 2020 11:18 am
Forum: What is my catfish?
Topic: 15cm(6in) possible leopard? Might be eating my fish.
Replies: 3
Views: 333

Re: 15cm(6in) possible leopard? Might be eating my fish.

Hi all, 20200119_160133.jpg Ok here is a better picture of it showing off more Pterygoplichthys spp. have about 12-14 soft rays in the dorsal fin. You can count them from your picture. Have a look at the Cat-eLog Pterygoplichthys punctatus . It looks in OK condition, but a bit snub-nosed. cheers Dar...
by dw1305
Tue Jan 07, 2020 10:42 am
Forum: Speak Easy
Topic: RO water
Replies: 11
Views: 485

Re: RO water

Hi all, Im very scared of Ph swings You definitely will get pH swings, but you don't need to be scared of them. As your water gets softer, and you move towards pure H2O, pH inherently becomes more and more unstable. This happens both in nature and in the tank in soft water. The problem is that pH is...
by dw1305
Fri Dec 20, 2019 12:57 pm
Forum: Tank Talk
Topic: Using deep gravel and bacteria to control nitrogen
Replies: 107
Views: 25607

Re: Using deep gravel and bacteria to control nitrogen

Hi all, ..........I'll attempt to keep up with the scientific literature, but I probably won't have a proper trawl through it again before Christmas........ Another paper has come my way: Zhao et al. (2015) "Microbial community and removal of nitrogen via the addition of a carrier in a pilot-scale d...
by dw1305
Sun Dec 01, 2019 8:55 pm
Forum: South American Catfishes (Loricariidae - Plecos et al)
Topic: Black worms
Replies: 8
Views: 806

Re: Black worms

Hi all, My remaining doubt concerns the ambient temperatures which are currently below freezing here. A simple cost-effectively packed jiffy bag might not keep them alive in the cold. But a proper insulated box with heat packs will cost a lot more to send. Any thoughts? I don't think you have too wo...
by dw1305
Sun Dec 01, 2019 2:46 pm
Forum: South American Catfishes (Loricariidae - Plecos et al)
Topic: Black worms
Replies: 8
Views: 806

Re: Black worms

Hi all, I’ve got two tanks with healthy populations of them in the substrate. I’m not sure if it’s permitted to post them from the UK to the Netherlands? I have sent some within the UK which arrived successfully. I've sent some to the Netherlands before, Lumbriculus variegatus is native to N. Europe...
by dw1305
Fri Nov 22, 2019 11:37 am
Forum: Taxonomy & Science News
Topic: Biofloc technology used in the intensive aquaculture of Corydoras aeneus
Replies: 4
Views: 1264

Re: Biofloc technology used in the intensive aquaculture of Corydoras aeneus

Hi all, I've just had a glance at the paper. One thing that stand out is that the abstract is a bit misleading, because there was actually ~50% mortality in the 6000 m^2 density and ~33% mortality even in the lowest stocking density. The highest survival rate was found on 3000 fish/m2 stocking densi...
by dw1305
Fri Nov 22, 2019 9:47 am
Forum: Taxonomy & Science News
Topic: Biofloc technology used in the intensive aquaculture of Corydoras aeneus
Replies: 4
Views: 1264

Re: Biofloc technology used in the intensive aquaculture of Corydoras aeneus

Hi all, Now that is an interesting one. I wouldn't have thought that biofloc technology was suitable for culturing Corydoras aeneus , because the system relies on the fish eating the bioflocs, which are mainly comprised of bacteria and algae (with associated rotifers, protozoa etc). You can find the...
by dw1305
Sat Sep 28, 2019 12:20 pm
Forum: Tank Talk
Topic: Any ideas
Replies: 4
Views: 969

Re: Any ideas

Hi all, Over the past few days I've noticed these little cream/yellow blobs appear in my tank. The tank is home to dwarf anchor catfish (Hara jerdoni) and a load of snails. Has anyone got a clue as to what these things are?...... They look like they might be the resin case that some slow release fer...
by dw1305
Mon Sep 23, 2019 3:32 pm
Forum: South American Catfishes (Loricariidae - Plecos et al)
Topic: New to Otocinclus
Replies: 24
Views: 1192

Re: New to Otocinclus

Hi all, They had taken it to heart. So long I have only seen 3 eating at the same time I think is won’t long for the other 2 to follow. But I know those 3 won’t starve to death. I thought it would take longer, I guess they were really starving. Well done. Something no one have mention is how it affe...
by dw1305
Sun Sep 22, 2019 8:44 am
Forum: Speak Easy
Topic: Foods for weird and wonderful (and I'm just strange) plecos!
Replies: 31
Views: 4538

Re: Foods for weird and wonderful (and I'm just strange) plecos!

Hi all, I know this is an old thread, and this info isn't new, but today I got a good example showing how well live blackworms can infiltrate Brussels sprouts in a glass bowl, to create an ideal feeding opportunity for BNs, Panaqolus, Peckoltia and even Hypancistrus.............. The plecos eat the ...
by dw1305
Sat Sep 21, 2019 2:26 pm
Forum: South American Catfishes (Loricariidae - Plecos et al)
Topic: Oak leaves
Replies: 3
Views: 341

Re: Oak leaves

Hi all, I've read about many using oak leaves in their tanks, and I have quite a bit around here. But I swore that somewhere I read something about black oak being no good. Does anyone know if that's the case? Also, what about silver Maple leaves, yea or nay? Sycamore? I don't know about the Black O...
by dw1305
Sat Sep 21, 2019 2:07 pm
Forum: South American Catfishes (Loricariidae - Plecos et al)
Topic: New to Otocinclus
Replies: 24
Views: 1192

Re: New to Otocinclus

Hi all, ........ but I tend to go with the darker green plants when I feed leaves. I think that is probably a good rule of thumb. Dark green would be a pretty good indicator of higher chlorophyll content, and chlorophyll contains a lot of protein etc. Most wild plants with deep green leaves grow in ...
by dw1305
Fri Sep 20, 2019 3:00 pm
Forum: South American Catfishes (Loricariidae - Plecos et al)
Topic: New to Otocinclus
Replies: 24
Views: 1192

Re: New to Otocinclus

Hi all, ....... Also added zucchini and I know something have been picking at it, but I think it may be the corys. I Don’t know how long it will take for the otos to identify the zucchini as food....... I'd leave it in for a while, so that it begins to soften. Often people take the vegetables out wh...
by dw1305
Wed Sep 18, 2019 11:12 am
Forum: South American Catfishes (Loricariidae - Plecos et al)
Topic: New to Otocinclus
Replies: 24
Views: 1192

Re: New to Otocinclus

Hi all, Question. Should I give them the same pellets, adding more since the corys are voracious or should I feed them something else? As @Lycosid said vegetables are the best option. I also like some structural leaf litter ( http://www.planetcatfish.com/forum/viewtopic.php?f=5&t=34911&p=236022 ). C...
by dw1305
Mon Sep 16, 2019 2:35 pm
Forum: South American Catfishes (Loricariidae - Plecos et al)
Topic: Fungus/Egg Cave Rehab?
Replies: 1
Views: 310

Re: Fungus/Egg Cave Rehab?

Hi all, .........I have now lost two batches of L-240 eggs to fungus, and I am considering boiling, soaking in bleach, or even destroying the spawning cave, but I don't want to disrupt any future spawns and worry that replacing the old cave with a new one, especially since it is handmade and unique,...
by dw1305
Thu Sep 12, 2019 12:29 pm
Forum: Taxonomy & Science News
Topic: Phylogenetic analysis of Corydoras arcuatus mitochondrial genome
Replies: 6
Views: 525

Re: Phylogenetic analysis of Corydoras arcuatus mitochondrial genome

Hi all, Probably granti..... Following the other similar thread " Complete mitochondrial genome of Corydoras sterbai "( https://www.planetcatfish.com/forum/viewtopic.php?f=14&t=48285 ). I had a look at their papers, partially because I was interested in how they knew their fish was really Corydoras(...
by dw1305
Tue Sep 10, 2019 2:52 pm
Forum: Taxonomy & Science News
Topic: Complete mitochondrial genome of Corydoras sterbai
Replies: 4
Views: 439

Re: Complete mitochondrial genome of Corydoras sterbai

Hi all, Considering this is the third article a cory mitochondrial genome, it seems that some lab got a new toy! (a next-gen sequencer)! Why publish one paper when you can publish ten?! Just gaming the system, unfortunately, and not adding much value. I was wondering about these the other day. Four ...
by dw1305
Sat Sep 07, 2019 8:19 pm
Forum: Tank Talk
Topic: Using deep gravel and bacteria to control nitrogen
Replies: 107
Views: 25607

Re: Using deep gravel and bacteria to control nitrogen

Hi all, ......I have come to believe there is probably no single dominant bacteria or archaea across the universe of tanks. Rather each tank will have its own particular balance. I am also pretty sure the exact complement of nitrifying organisms in a tank can change over time as the ammonia loading ...
by dw1305
Fri Sep 06, 2019 9:56 pm
Forum: Tank Talk
Topic: Using deep gravel and bacteria to control nitrogen
Replies: 107
Views: 25607

Re: Using deep gravel and bacteria to control nitrogen

Hi all, I seem to recall I tried to plant it where there was decent flow/circulation. I am not sure if that was an urban aquarium myth or good advice. I'm not sure. None of my plants are fixed to anything, so they tend to end up out of the direct flow from the filter. The photo above is in my kitche...
by dw1305
Thu Sep 05, 2019 4:31 pm
Forum: Tank Talk
Topic: Using deep gravel and bacteria to control nitrogen
Replies: 107
Views: 25607

Re: Using deep gravel and bacteria to control nitrogen

Hi all, .......As someone that routinely kills java fern, it'd be great if you could let me know a few plants which could survive with low light and not planted in the substrate? Anubias do OK, but don't really seem to grow in my tanks, java fern is OK in some tanks but dies in others........ Have y...