Natural Cholla Wood for Aquarium Decoration Shrimp and Fish Tank (4 Inch (3 Pack))

Love this wood and have bought many from this seller. They do come dirty, but that's how you know it's real wood. Just soak, rinse. Takes time to sink, but can use weights if too impatient, then super glue some moss to hide the weight. Last along time and also grows biofilm for a snail and shrimp snack. And baby fry can hide. Will most likely be back for more. I use it in all my tanks.

Got these for my shrimp to hide in and they are indeed doing that. They look great in the tank. You need to follow the instructions on the package - boil then soak for a few days. They stay put in the tank and are awesome. For those of you complaining that they are small, it IS clearly stated in the description what size they are.......

Update:I've been using these to anchor my plants now for months, and they are doing great. The plants are so healthy, I have to trim them every few months so they don't grow out of the top of my 29 Gal aquarium. When I had plants anchored in my rocks, they would die back each time I vacuumed the aquarium, but this is no longer an issue. I'm trying some new plants, so needed a few more pieces of wood. I've found that I can use a drill bit to carve out larger holes in the wood for my plant roots. If you use a toothpick in the existing cracks around the hole you carved, it will make the hole a little larger so you can insert the plant roots, then remove the toothpick, and plant is very secure in a decorative anchor.Love these. You do need to soak them a few days to make them sink, and I did notice some tannin colors leaching out in that water as I changed it daily, but that small inconvenience is well worth it. I have checked my PH as I have bought the Cholla wood before, and it seems stable quickly, but do check your water PH (as always).My guppies loves these and the babies hide inside. The main reason I love them is that they have little holes in them and the wood is soft, so you can easily use a knife or any hard object to scrape in the hole to make it big enough to insert plant roots. Once you have your live plants anchored, they grow really well, and vacuuming your tank is a breeze, since you can just push all your plants anchored in the wood (and not your rocks) to one side of the aquarium and then vacuum the rocks on the opposite side of the aquarium. Many times in the past, I have had beautiful plants and when I vacuumed, I would disturb the roots and they would die. I did buy some aquarium epoxy stuff (for coral) that hardens quickly and is safe for one plant with a large root ball, but most of my plants will fit easily in the holes in the wood, and because the holes are long and vary in size, once you insert in the the hole where you made the larger width, just slide right or left to the smaller opening to anchor easily. Some plants are so large that they cause the cholla wood to float a bit, just push some rocks inside the cholla at the opening at the other end and that problem is easily fixed. I would give this 10 stars if I could, LOVE IT.

Excellent quality in terms of thickness. Save yourself a ton of time and scrub them with a stiff cleaning brush after the first boil.

These are very small, ideal for shrimps. My little colony loves these little logs. I boiled them for about 20 minutes, then let them soak in distilled water until the sank to the bottom. Love them!

I’ve ordered these a few times. Boiled in water for a little over 30 minutes and have never had any issue getting these to sink immediately. I have not had to soak them for the full 24/48 hours.All my shrimp love these and they are great to tie/glue some moss too.

These are beautiful, give lots of extra surface area for bio filtration, make excellent hiding places and ladders, and they look absolutely beautiful... But, they need to be soaked prior to putting them in the tank so that they will sink and, more importantly, they have made my tank incredibly cloudy. There is a living layer of gel coating them all at least 2mm thick. Clear and white. It took a day to for this to happen. Both the gel and the cloudy water. The fish do not seem to mind, but I have hardy fish that are used to living in tough conditions in the wild. After almost two weeks(and a large container of activated carbon directly in the tank), the water is getting slightly clearer and the bio film on these is getting a little bit thinner. I probably should have soaked these to death before putting them in. With aquarium water from a well established tank with some of the substrate taken out and put into the soaking vessel, not tap or even dechlorinated water. So that the bio film could eat all of whatever is feeding it. I have no algae eaters, plecos, ottos, shrimp, or even snails, so I don't know if it would be any different with something like that in the tank, but the only difference I could see happening is that the bio film would get eaten. I will post an update when the water clears or if it never does.Update: They have stopped making my water cloudy as of a day ago, but they are now slowly disintegrating. Apparently they can't withstand standard freshwater tank microorganisms

Perfect for my shrimp tank. Shoves some java moss on either end of each log. Soaked for a couple hours before putting in the tank. They 2/3 sank on the second day and the third sank on the third day. Haven't noticed a ton of tannins or any water changes from them. Overall very happy w the quality.