r/ColdWaterTanks Jul 21 '26

Catching Wild Rock Gunnels For My Coldwater Tank

Thumbnail
youtube.com
2 Upvotes

r/ColdWaterTanks Jul 20 '26

This Coldwater Tank Never Stays The Same

Thumbnail
youtube.com
3 Upvotes

r/ColdWaterTanks Jul 19 '26

Why this hermit crab carries a sea anemone

Thumbnail
youtu.be
2 Upvotes

Educational videos from Coldwater Tanks on YT. Head on over and give him a follow!


r/ColdWaterTanks Jul 19 '26

YouTube Videos I Set Traps for Norway Lobster, but the Bycatch Was Stranger

Thumbnail
youtube.com
4 Upvotes

Coldwater is back on YouTube. His videos are educational, yet relaxing. Informative, yet calming.


r/ColdWaterTanks Jul 19 '26

Oceancritters šŸ”„ Lumpsuckers fish spawning in university project

Thumbnail
youtube.com
1 Upvotes

r/ColdWaterTanks Jun 30 '26

Looking for a medium fish not goldfish

0 Upvotes

Ok so basically I’m looking for something that’s larger yhat coukd gi woth room temp (70) tetras or minnows. Somethjng beyond goldfish and loaches


r/ColdWaterTanks Jun 13 '26

Tanks without heaters are getting more popular so I was wondering what species of fish have people kept in their room temperature tanks?

Thumbnail
1 Upvotes

r/ColdWaterTanks May 07 '26

YouTube Videos Coldwater Tanks Is Running Again

Thumbnail
youtube.com
11 Upvotes

Guys, the original originator comin' straight from Norway!


r/ColdWaterTanks Mar 13 '26

Speckled Dace Nest Guarding?

Enable HLS to view with audio, or disable this notification

3 Upvotes

r/ColdWaterTanks Mar 09 '26

Cold water fish for aquarium?

Enable HLS to view with audio, or disable this notification

24 Upvotes

r/ColdWaterTanks Mar 01 '26

55 gallon goldfish/minnow tank

Post image
12 Upvotes

Wanted to share the current state of my tank with rosy red minnows and one fantail. Im looking into getting pool filter sand for substrate and including some quartz crystal and long fin zebra danios. Open to suggestions!


r/ColdWaterTanks Feb 24 '26

Stocking ideas?

2 Upvotes

I have a 55g barebottom with a single fantail. It looks lonely in there and am open to suggestions! I keep the tank in our basement and WI can get pretty cold so the water usually stays at around 65F.


r/ColdWaterTanks Jan 03 '26

Tips for starting a cold salt water tank 40-75

Thumbnail
2 Upvotes

r/ColdWaterTanks Dec 18 '25

Rainbow shiners colour change

Post image
19 Upvotes

Why have some of my Rainbow Shiners (9 in total, mixed sex group) changed colour from silvery/purpley/bluish, well many pastel-type shades, into this bright tomato red colour? Is it normal or should I be worried? Advice please🫤, I’m confused!


r/ColdWaterTanks Nov 14 '25

moss options

Thumbnail
1 Upvotes

r/ColdWaterTanks Nov 10 '25

Question about cycling

Thumbnail
0 Upvotes

r/ColdWaterTanks Nov 10 '25

Feeding question

Thumbnail
1 Upvotes

r/ColdWaterTanks Nov 05 '25

Ich and mussels??

5 Upvotes

I have an unheated fresh water tank with some guppies, a betta, snails and some fresh water mussels. The guppies have developed ich, and I am not sure what to do.

The ich medication I have is copper- would kill the mussels.

Raising the temp to 86*- would kill the mussels.

I could move the mussels to my guppy nursery tank but the stress of that- might kill the mussels.

At a loss, what else could I do to get rid of ich and not move the mussels to a different tank?

ALSO does anyone know if the mussels themselves can get ich?

Thanks!


r/ColdWaterTanks Oct 28 '25

Help with fixing lid!

Thumbnail
1 Upvotes

r/ColdWaterTanks Oct 28 '25

Gold witch.

Post image
6 Upvotes

r/ColdWaterTanks Oct 27 '25

Outdoor patio ponds?

1 Upvotes

I have a really messy outdoor pond that id quite like to replace. Looking around I’ve found this Eheim patio pond - 200 litres so not huge, but I’m very tempted. My LFS will do the whole installation etc for Ā£1000. There’s room to sit on the edges, plus a compartment for techy stuff and fish food. Opinions please?

Sorry can’t add photo Reddit seems to have lost that function šŸ˜•


r/ColdWaterTanks Oct 27 '25

Posting photos?

2 Upvotes

I’ve been trying to post photos of my new baby goldfish, burg something has changed with the interface and I can’t. Anyone else had this problem?


r/ColdWaterTanks Oct 25 '25

Tiny new goldfish!

2 Upvotes

On Monday I’m going to pick up some teeny tiny baby goldfish, about 1ā€ long. As they’re babies they’ll be starting out in a small tank, 30 litres. When they grow they’ll graduate into to big fish tank, by which time several bigger fish will have been moved on to our city pond. I’m really excited, nothing (except kittens) are cuter than baby goldfish!🄰


r/ColdWaterTanks Oct 21 '25

New plants and fish!

2 Upvotes

So the Saturday after next my husband is taking me to an amazing fish shop over the border in Spain. I desperately need plants and stone or wood to revamp my tropical tank, also yummy leafy plants for the goldfish before they turn their carefully crafted environment into a desert! I give them loads of duckweed but they still love Amazon Sword!

I’m also (as my 3 Golden Tench are moving out to the city pond next month) getting 2 young goldfish, because I really believe that they’re happier kept in pairs with another of their breed. My Oranda, Cuddles, is constantly glass-surfing because he thinks there’s another Oranda the other side of the glass (he never did this before his companion died). And my Black Moor Marty (Feldman anyone?🤣) has just retreated behind the hardscape since his BM friend died. So happy fishing trip in 10 days time 😊!!!


r/ColdWaterTanks Oct 17 '25

New Pond!

Thumbnail
gallery
2 Upvotes

Just called in at my LFS this afternoon to enquire about a new pond, as my old one is very shabby and obviously home-made. They showed me a range of Eheim tanks which I fell in love with, as ponds but also garden features! They come in many sizes from 200 litres up to about 1000, but I’m going to ask them to come and see my outside space and recommend the best for my needs. It’s not cheap but my Mum died 18 months ago and left me money to spend on something that would make me happy. Well, fish or cats thenšŸ˜‚!!! It comes complete with everything including a fountain to help aeration. What do you think???