Is the fake rock in the Fake Rock Instructional (by Whitney05) safe for making a waterfall?
I have 10 gallons of water in my hermit crab aquarium and want to use one of the water filters to make a waterfall. However, it will be difficult to find and work with real slate.
Will running water damage the fake rocks? Will the chemicals in the rocks contaminate the water? I love the polystyrene and expanding foam idea but I am wondering whether there is a more natural alternative for the outer layer?
I wouldn't recommend it, as the sealant would eventually need to be replaced and would probably need to be replaced frequently. The chemicals are proven safe for reptiles, but not with a constant water source running on them. The water would do more damage to the overall piece. Plus, hermit crabs don't necessarily need a waterfall. They need humidity, but not necessarily in the form of a waterfall. A simple mist twice a day would suffice perfectly.
Thanks Whitney. I confess that the waterfall is more for decoration and a fun project to fill up some space in the 90 gallon aquarium than out of necessity for the crabs.
Nevertheless I've decided to give it a try, but I will be coating the portion which will be in contact with the running water with aquarium silicone first. I also do not trust the polycrylic sealer to hold up to constant flowing water, but I know that the silicone can. Hopefully the humidity will not damage the sealer, but this is really just an experiment anyways so we'll see!
Copyright © 2026 The Arena Media Brands, LLC and respective content providers on this website. HubPages® is a registered trademark of The Arena Platform, Inc. Other product and company names shown may be trademarks of their respective owners. The Arena Media Brands, LLC and respective content providers to this website may receive compensation for some links to products and services on this website.
Copyright © 2026 Maven Media Brands, LLC and respective owners.
As a user in the EEA, your approval is needed on a few things. To provide a better website experience, hubpages.com uses cookies (and other similar technologies) and may collect, process, and share personal data. Please choose which areas of our service you consent to our doing so.
For more information on managing or withdrawing consents and how we handle data, visit our Privacy Policy at: https://corp.maven.io/privacy-policy
Show Details| Necessary | |
|---|---|
| HubPages Device ID | This is used to identify particular browsers or devices when the access the service, and is used for security reasons. |
| Login | This is necessary to sign in to the HubPages Service. |
| Google Recaptcha | This is used to prevent bots and spam. (Privacy Policy) |
| Akismet | This is used to detect comment spam. (Privacy Policy) |
| HubPages Google Analytics | This is used to provide data on traffic to our website, all personally identifyable data is anonymized. (Privacy Policy) |
| HubPages Traffic Pixel | This is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized. |
| Amazon Web Services | This is a cloud services platform that we used to host our service. (Privacy Policy) |
| Cloudflare | This is a cloud CDN service that we use to efficiently deliver files required for our service to operate such as javascript, cascading style sheets, images, and videos. (Privacy Policy) |
| Google Hosted Libraries | Javascript software libraries such as jQuery are loaded at endpoints on the googleapis.com or gstatic.com domains, for performance and efficiency reasons. (Privacy Policy) |
| Features | |
|---|---|
| Google Custom Search | This is feature allows you to search the site. (Privacy Policy) |
| Google Maps | Some articles have Google Maps embedded in them. (Privacy Policy) |
| Google Charts | This is used to display charts and graphs on articles and the author center. (Privacy Policy) |
| Google AdSense Host API | This service allows you to sign up for or associate a Google AdSense account with HubPages, so that you can earn money from ads on your articles. No data is shared unless you engage with this feature. (Privacy Policy) |
| Google YouTube | Some articles have YouTube videos embedded in them. (Privacy Policy) |
| Vimeo | Some articles have Vimeo videos embedded in them. (Privacy Policy) |
| Paypal | This is used for a registered author who enrolls in the HubPages Earnings program and requests to be paid via PayPal. No data is shared with Paypal unless you engage with this feature. (Privacy Policy) |
| Facebook Login | You can use this to streamline signing up for, or signing in to your Hubpages account. No data is shared with Facebook unless you engage with this feature. (Privacy Policy) |
| Maven | This supports the Maven widget and search functionality. (Privacy Policy) |
| Marketing | |
|---|---|
| Google AdSense | This is an ad network. (Privacy Policy) |
| Google DoubleClick | Google provides ad serving technology and runs an ad network. (Privacy Policy) |
| Index Exchange | This is an ad network. (Privacy Policy) |
| Sovrn | This is an ad network. (Privacy Policy) |
| Facebook Ads | This is an ad network. (Privacy Policy) |
| Amazon Unified Ad Marketplace | This is an ad network. (Privacy Policy) |
| AppNexus | This is an ad network. (Privacy Policy) |
| Openx | This is an ad network. (Privacy Policy) |
| Rubicon Project | This is an ad network. (Privacy Policy) |
| TripleLift | This is an ad network. (Privacy Policy) |
| Say Media | We partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy) |
| Remarketing Pixels | We may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites. |
| Conversion Tracking Pixels | We may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service. |
| Statistics | |
|---|---|
| Author Google Analytics | This is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy) |
| Comscore | ComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. Non-consent will result in ComScore only processing obfuscated personal data. (Privacy Policy) |
| Amazon Tracking Pixel | Some articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy) |
| Clicksco | This is a data management platform studying reader behavior (Privacy Policy) |

