[18 Pounds] Pebbles Aquarium Gravel River Rock, Natural Polished Decorative Gravel,Garden Outdoor Ornamental River Pebbles Rocks, Mixed Color Stones，Polished Gravel for Landscaping Vase Fillers (18)

For my 55 gallon tank, I bought two bags of this. a few months ago, I went to an aquarium; And, while I like how they look in the tank, they're terrible for keeping fish. br>br>I built a freshwater community tank with a good bioload and followed the nitrogen cycle instructions to the letter. After my levels of ammonia, nitrites, and nitrates had spiked and then leveled off (ammonia, nitrites, and nitrates), I discovered that I was having problems with brown algae (silica diatoms), as well as my pleco and snails. My cleaners can't get underneath these rocks because they're too heavy. Food that falls between the rocks rots, causing nitrate levels to rise and necessitating much more frequent cleaning than usual. Furthermore, my gravel vac struggled to remove the crud from these rocks. After weeks of fighting algae and performing more water changes than I expected, I finally decided to remove the rocks and replace them with a fish-friendly substrate. Instead, these rocks will be used in my garden. I haven't had an issue with algae in my tank since I switched these out. br>br>These rocks are very pretty, but they'd probably look better in a smaller tank (5 gallons or less). I don't recommend these for larger tanks (over 10 gal) because you'll be doing more water changes anyway.

Gracie Dickerson

| Jun 04, 2021

They only fill half of the bottom of my 40 gallon tank, but they're lovely. To clear all residue, soak in extremely hot water several times.

Brixton Beasley

| May 07, 2021

This item was purchased for use in an aquarium. Genuine polished stones (not painted or lacquered), large and lovely.

Josiah Lara

| Oct 26, 2021

These are stunning rocks. They are the perfect size, not too small, not too big, and give the impression of a lakeside water line. They are also a nice color.

Kailani Zhang

| Jul 16, 2021

I have a large indoor planter that I wanted to fill with lovely smooth neutral river rocks and artificial plants. I was in desperate need of some rocks, and these were perfect! If I had to make any changes, it would be to reinforce the plastic in which it is packaged. This, however, will not deter me from purchasing additional items! (because I miscalculated and will require more to fill the planter) Excellent Product!.

Malakai CHARLTON

| Feb 08, 2021

I used this as the top layer in my 55gal to get the look I wanted, and it worked perfectly. The stones were the exact size and color that I was looking for.

Amanda Potter

| Feb 14, 2021

To remove the oily film that came off the rocks, I had to rinse them several times in hot water. When it comes to aquatic animals, I'd be very cautious about using these. I'm not sure what it is, but cleaning it was extremely time consuming and stressful, and it was not suitable for aquarium pets!.

Jared Gray

| Jan 17, 2021