CaribSea South Sea Base Rock for Aquarium - 40 lb - Natural Rock for Aquascaping, Ideal for Saltwater Tanks, Enhances Aquarium Design & Supports Aquatic Life

This product is well worth the price. It is man made rock and a great beginning substitute for live rock. Make sure to rinse well and it can go straight into your aquarium. It can be made into live rock over time and is a perfect addition to a basic saltwater aquarium. It comes with many medium size 5 by 8 inch rocks, It was enough to create a nice reef wall in a 75 gallon tank. I would definitely buy it again!

Just purchased two boxes of this rock for my new 125 gallon saltwater tank set up and I am really loving the look of it. I have always purchased live rock for the beneficial aspects of it, but recently my live rock purchases have come with unwelcome hitchhikers which is irritating after a while. Live rock can also be a task to position in your tank without toppling over. This rock goes together like puzzle pieces and I feel as though I will not have to worry as much about my hippo tang being crushed by toppling rocks since she loves to nestle herself in between crevices (I do not like to glue live rock together because I move it around too much due to corals). For the most part I received some pretty large pieces (by large I would say football size) but that was no problem for me as I have a larger tank. You can also use a hand saw to cut down the rock if you so choose. I did start to clean off the rock before placing it into my tank, but all that is on the rock is sand so that will obviously settle after a while. If you are adding this to an already established tank I think I would take the time to clean that extra sand off so your tank is not cloudy for hours. Two of the rocks came broken but honestly it did not hurt anything; I placed the larger part on the sand bed and used the smaller part to stack. I even had small broken pieces at the bottom of the box that I was happy about because I can glue corals to them in the future.

These are Awesome! Used in my 20 gallon High with Freshwater Angelfish (for size reference). I followed advice from another review and rinsed really well then let it sit 24 hrs with seachem prime (or any conditioner for tap water) in separate bucket before adding to tank. Color is great, came with many pieces to build my little structure! Alot for 10 lbs , Great deal and quality!

The rocks arrived with no packing materials, just rocks thrown directly into a cardboard box. A few rocks were broken on arrival but you don’t get any say in what they look like anyway so it didn’t matter to me too much. The biggest rocks were about softball sized and the smallest were slightly smaller than baseball sized. All of the rocks have interesting occlusions but every rock has an overall round shape to it which I think is boring and makes it hard to create an interesting scape, especially with such similar sized rocks. I rinsed the rocks very thoroughly but because of the poor shipping conditions, chunks kept falling off and there was a lot of powder which made for a messy process. I added all the included rocks to my 6gal pico reef and it filled out the space well. This is probably my fault for not understanding live rock but it caused an enormous ammonia spike after adding the rocks, so be aware of that. I’m all for supporting my local fish store but for my first salt water tank I didn’t want to spend a fortune on it and it turned out well. These rocks were a good addition and I’d recommend them to someone trying to dip their toes into the hobby. Just be aware that this is a very cheap solution so set your expectations accordingly!

I purchased 4 bags (~ 10-11 lbs each) and each piece is beautiful. The bags are made of heavy-duty net and contained between 3-4 pieces each. The box had no padding, but I still had very little rubble (any small break-offs will be perfect for my sump). I used a toothbrush to help clear out some of the hard to reach places while rinsing. Be aware that they are kinda rough on the hands, so I recommend wearing tear-resistant gloves when handling. There are a lot of nook and crannies and the shapes are what I would have personally chosen. The shipping was fast. I live in Alaska and things generally take a lot longer to get up here. Pretty much everything is more expensive, so finding this item at such a great price was awesome! I haven't placed them in my tank yet, but may update this review later.

Nice sized pieces that can be glued together to make much larger structures, lots of holes ect , wash before using it is gritty from handling during shipping, I would buy from them again.

Was on the fence on this one. Was redoing my 40-Gl salt water tank. Was going back and forth between this and the fiji base rock. I like the fiji cause I can be more creative in building caves and nooks due to the shape. But I went with these and overall I'm happy. These rocks have a lot of surface area due to the "craters" all over. Lots of area for bacteria. After ordering this on a friday I was told that it would arrive on tuesday which was awesome. However, while i was waiting for my fedex shippment, fedex tracking updated and posted that "box damaged, customer refused". Called up fedex and gave them an earfull about how did they decide that I refused if they didn't even come to my house. After 20 minutes on the phone, they told me that the driver made the call and that it was already on its way back to amazon. Good job fedex. I told them that it's just rocks and that "I" should be the one to decide if it was to be refused or not. Anyways..... web chatted with amazon and within 5 minutes they sent another order out free of charge. You guys are great amazon. Eventually got the box, washed the rocks and dropped them in with some live rocks to seed. Almost a month later and everything looks good. Don't have color/algae yet but I'm not worried. Parameters are comming down. Maybe one more week. Overall happy with everything except I wish it had the fiji characteristic of being more elongated but no big deal.

These rocks are amazing for the price. Bought two boxes for my tanks (10G and a couple of 5 G) . I still had a few left. good size rocks, generous quantity. will definitely buy in the future when i upgrade my tank!! Make sure to wash them thoroughly before dropping them in the tank. They are pretty dusty.

Muy bonita piedra.

I was a bit worried because I could here a lot of loose pieces but as I opened the box I was jumping up and down from excitement. They are big and beautiful. I can't wait to set them up in my tank. I recommend this shop 100%. ☺️☺️

good quality and price

Great quality rock, came in mostly bigger pieces which is nice because it affords you the ability to break the rocks and manipulate them as you would wish. My local LFS was out of dry rock so I figured I would give it a go ordering this product and I was concerned about the selection of shapes, however I believe they do put effort into giving you a broad selection of shapes. Will likely purchase in the future if I am in the same situation. Did not weigh the bag of rock however I believe it must be just about on par with the lb per ga ratio as the picture is of a 10g tank

I have brought 4 boxes (40Lbs) per box , and I got around 42-46lbs in each box , and very little damage , All pieces were in perfect condition ! Will be buying more when available again. I was happy to have Flat Rock , Rounded rock and all sizes of thickness . Super fast shipping and amazing price delivered to my Door !!!!!