TankMend does not print credit lines under images. A photographer’s name stamped across a diagram of a filter housing helps nobody, and captions clutter a guide you are trying to read while holding a wet impeller.
So the attribution lives here instead, in one place, for every photograph on the site.
Licensing
All photographs are licensed from Unsplash, Pexels, or Pixabay under their respective free licences, which permit commercial use without attribution. We credit anyway, because the photographers did the work.
No image on this site is AI generated, and we do not use manufacturer product photography, marketing images, or brand assets. See our disclaimer regarding trademarks and non-affiliation.
A note on subject matter
Free stock libraries hold very little photography of actual aquarium equipment. Where no literal photograph exists, guides are illustrated with the closest real subject instead: a pressure regulator for CO2, an impeller for pumps, a temperature gauge for heating. Photographs on this site illustrate a concept, they are not photographs of the specific product being discussed.
Full attribution list
Pexels (35)
| Photograph | Photographer | Source |
|---|---|---|
| Airstones Compared: Types and Bubble Size | Sóc Năng Động | View original |
| Aquarium Heater Controllers: Worth the Money | Vladimir Srajber | View original |
| Aquarium Temperature Ranges by Species | Jessica Lewis 🦋 thepaintedsquare | View original |
| Battery Backup Air Pumps for Outages | Ramesh Kambattan | View original |
| Building an Equipment Maintenance Log | Natasha Fernandez | View original |
| Cheap Spare Parts Worth Keeping | Daniel Rosehill | View original |
| Choosing an LED Fixture by Tank Depth | Ducky | View original |
| Clogged Intakes and How to Prevent Them | Wayee Tan | View original |
| Diagnosing a Dead Thermostat | tnfeez desgin | View original |
| Dimming and Ramping: Why Gradual Light Matters | Enric Cruz López | View original |
| DIY Yeast CO2: What It Can and Cannot Do | hello aesthe | View original |
| Do Aquarium Lights Dim Over Time | John-Mark Smith | View original |
| Fixing Algae Caused by Too Much Light | Timon Cornelissen | View original |
| Flow Rates by Tank Type | Nina Simková | View original |
| How to Clean a Pump Impeller Properly | cottonbro studio | View original |
| Impeller Wear: Spotting It Early | Jan van der Wolf | View original |
| Keeping a Tank Warm During a Power Cut | محمد الحبيب | View original |
| Liquid Carbon vs Pressurised CO2 | Anna Shvets | View original |
| O-Rings and Gaskets: Replace or Reseal | Balaji Srinivasan | View original |
| Power Outage: What to Run First | Даниил Зенцов | View original |
| Replacing Pump Parts Instead of the Pump | Jose Ricardo Barraza Morachis | View original |
| Restarting Equipment After an Outage | Markus Winkler | View original |
| Return Pump Head Height Explained | Cemrecan Yurtman | View original |
| Signs You Are Gassing Your Fish | Erik Mclean | View original |
| Siphon Risk and How to Prevent a Flood | Jared Brotman | View original |
| tankmend-hero-v2 | Shamsuri Azmi | View original |
| The pH Drop Method for Measuring CO2 | i-SENS, USA | View original |
| The Siesta Period: Splitting Your Photoperiod | Zülfü Demir📸 | View original |
| Timing CO2 Against Your Light Schedule | James Collington | View original |
| Wavemakers: Worth It in a Freshwater Tank | Nothing Ahead | View original |
| What Is Actually User-Replaceable | Dan Cristian Pădureț | View original |
| What to Do When an LED Channel Fails | Jakub Pabis | View original |
| When Aquarium Equipment Trips a Breaker | Kleison Leopoldino | View original |
| Why Watts Per Gallon Stopped Working | Delfina Baj | View original |
| Why Your Powerhead Lost Suction | RDNE Stock project | View original |
Unsplash (93)
| Photograph | Photographer | Source |
|---|---|---|
| A Filter Maintenance Schedule by Tank Type | Eric Rothermel | View original |
| A planted aquarium lit from above, where lighting decides plant growth | Christian Ang | View original |
| A pressure regulator and gauges, the heart of a CO2 injection system | Anton Savinov | View original |
| A workbench and tools, where most equipment faults get resolved | Tahamie Farooqui | View original |
| Air Pump Sizing by Tank Depth | iSawRed | View original |
| An impeller, the single moving part inside most aquarium pumps | Valentin | View original |
| Aquarium Equipment Troubleshooting: Start Here | camera obscura | View original |
| Aquarium Filter Turnover Rate Explained | Jackson Hendry | View original |
| Aquarium Heater Wattage: A Sizing Guide | Dan LeFebvre | View original |
| Aquarium Lighting: PAR, Kelvin, and Photoperiod | nv | View original |
| Are Filter Cartridges a Waste of Money | Sarah Swainson | View original |
| Bio Media Compared: Ceramic, Matrix, and Bio-Balls | boris misevic | View original |
| Canister vs HOB Filter: Which Fits Your Tank | Yuriy Vertikov | View original |
| cat-filters-5227c5 | Ian Talmacs | View original |
| cat-heating-1c09a6 | Dan LeFebvre | View original |
| Check Valves: Why Every Air Line Needs One | Saif71.com | View original |
| Choosing a CO2 Regulator Worth Buying | Wesley Tingey | View original |
| Circulation Pumps vs Powerheads | Roy Muz | View original |
| CO2 Cylinder Sizing and How Long One Lasts | Shane Hebzynski | View original |
| CO2 Diffusers vs Reactors Compared | Anita Austvika | View original |
| CO2 Injection Setup From Cylinder to Tank | Guille B | View original |
| CO2 Mistakes That Kill Fish | Mikael Seegen | View original |
| Common Heater Installation Mistakes | Ryutaro Uozumi | View original |
| Common Lighting Mistakes in Planted Tanks | iam_os | View original |
| Common Pump Installation Mistakes | Samuel Sianipar | View original |
| Common Repairs You Can Do in Twenty Minutes | Tekton | View original |
| Cooling an Aquarium During a Heat Wave | Giorgio Trovato | View original |
| Do Fish Need Darkness at Night | Fabrizio Conti | View original |
| Do You Actually Need CO2 in a Planted Tank | riis riiiis | View original |
| Drop Checker Colours and What They Mean | Ben Maffin | View original |
| Electrical Safety Around Aquariums | Claudio Schwarz | View original |
| End of Tank Dump: Cause and Prevention | Eric Prouzet | View original |
| Equipment Humming: Diagnosing by Sound | Angelo Abear | View original |
| Filter Media Order: What Goes Where | Mitch Fox | View original |
| Filter Mistakes That Crash a Tank Cycle | Ilya Yakubovich | View original |
| Filter Sizing for Heavily Stocked Tanks | Ivan Bandura | View original |
| Finding a Leak in a Canister Filter | Luis Tosta | View original |
| Finding Parts for Discontinued Equipment | Eric Prouzet | View original |
| Glass, Titanium, and Inline Heaters Compared | Dorothy Ere | View original |
| Grinding vs Humming: What Each Sound Means | Mike Hindle | View original |
| Heater Lifespan and When to Replace on Schedule | atelierbyvineeth ... | View original |
| Heater Wattage for Cold Rooms and Garages | Osman Rana | View original |
| How Long to Leave Aquarium Lights On | Malvestida | View original |
| How Loud Should an Aquarium Pump Be | Andy Makely | View original |
| How Often to Clean Aquarium Filter Media | Nathan Dumlao | View original |
| How Temperature Swings Actually Harm Fish | Markus Winkler | View original |
| How to Calibrate a Heater That Reads Wrong | Davide Buttani | View original |
| How to Choose an Aquarium Filter | Leo Rivas | View original |
| How to Cycle a New Filter Without Killing Fish | Louis Reed | View original |
| How to Prime a Canister Filter That Will Not Start | Elimende Inagella | View original |
| How to Read a Light Spec Sheet Honestly | Finn Mund | View original |
| How to Read an Aquarium Thermometer Correctly | Joseph Hoffman | View original |
| How to Replace Filter Media Without Losing Bacteria | GUY GRANDJEAN | View original |
| How to Set Your CO2 Bubble Count Safely | Wolfgang Weiser | View original |
| How to Silence a Noisy Air Pump | 2H Media | View original |
| How to Silence a Noisy Canister Filter | Scott Major | View original |
| How to Test a Suspect Heater Safely | Galen Crout | View original |
| Inline vs In-Tank CO2 Diffusion | Reproductive Health Supplies Coalition | View original |
| Internal Filters vs Sponge Filters for Small Tanks | manu schwendener | View original |
| Is a Heater Guard Actually Necessary | Susan Q Yin | View original |
| Kelvin Ratings and How Your Tank Looks | James Lansbury | View original |
| Light Spread vs Light Intensity | Karen Alsop | View original |
| Lighting a Deep Tank Without Cooking the Top | Sarah Lee | View original |
| Lighting for Low-Tech Planted Tanks | Liana S | View original |
| Low, Medium, and High Light Plants | Andy Feliciotti | View original |
| Needle Valve Drift and How to Stop It | mastars MT | View original |
| Nora Redfern, aquarium equipment technician and editor of TankMend | Beatriz Cattel | View original |
| PAR Explained for Planted Tanks | Jonathan Cosens Photography | View original |
| Powerhead Placement to Clear Dead Spots | Chris Stenger | View original |
| Preset vs Adjustable Aquarium Heaters | Adi Goldstein | View original |
| Refilling vs Exchanging CO2 Cylinders | Carl Nenzen Loven | View original |
| Replacing a Heater Without Shocking the Tank | Theme Photos | View original |
| Retrofitting an Old Hood to LED | Mariana B. | View original |
| Running CO2 on a Small Tank | Sarah Dorweiler | View original |
| Running Two Filters on One Tank: Worth It | T K | View original |
| Salt Creep on Electrical Connections | Sujay Paul | View original |
| Signs Your Aquarium Heater Is About to Fail | Jilbert Ebrahimi | View original |
| Solenoid Valves and How They Fail | Mika Baumeister | View original |
| Sponge Filters: When They Beat Everything Else | Timothy Dykes | View original |
| Surface Agitation and CO2: Finding the Balance | Greg Rosenke | View original |
| Surface Film: Fixing Poor Gas Exchange | Jorge Vasconez | View original |
| Timers and Controllers for Aquarium Lights | Clint Patterson | View original |
| Tubing, Splitters, and Air Control Valves | Philip Veater | View original |
| Undergravel Filters: Obsolete or Underrated | Ermelinda Martín | View original |
| Vibration Noise: Isolating the Source | Amr Rabie | View original |
| Water Movement: Sizing Pumps and Powerheads | Brice Cooper | View original |
| What Filter Noise Actually Tells You | Denisse Leon | View original |
| What to Do When a Heater Will Not Turn Off | Erwan Hesry | View original |
| When to Stop Repairing and Replace | Jakub Żerdzicki | View original |
| Where to Place a Heater for Even Temperature | Milo Galli | View original |
| Why Two Small Heaters Beat One Large One | Liam Briese | View original |
| Why Your Filter Flow Dropped and How to Fix It | Daan Mooij | View original |
| Why Your Tank Reads Different at Each End | Nick Monica | View original |