Alkalinity Chart
Do you recall your initial “dead fish” moment? You know, when one of your fish dies suddenly. Water’s clean. Filters is running. Temperature has been … Read more
Ronan Granger
Sump Residence Time Calculator
I know you’ve wondered at times if your filtration is actualy filtering or just moving water around. If you care about GPH (gallons per hour) … Read more
Flow Per Gallon Calculator
Whether it’s too little or just way too loud, pumps is where most of us go wrong in our fish tanks. You want healthy livestock … Read more
Red Sea Alkalinity Chart
Reef alkalinity is misunderstood by many new keepers. It’s not about chasing specific values (as if there were a number) as much as it’s about … Read more
Combined Powerhead Flow Calculator for Aquariums
If you’ve shopped for pumps or looked at pump boxes, you’ve likely noticed large numbers listed as flow rates. These numbers imply your tank will … Read more
Flow GPH to Tank Turnover Calculator
When you look at the aquarium, you see the flow from return nozzle. You chose a pump rated for high capacity, so it looks like … Read more
Lighting Spectrum Chart
The aquarium looks good to you. There are some beautiful coral and there are some nice-looking green plants in it. But something seems off, maybe … Read more
Total Dynamic Head Calculator
That aquarium pump probably had great specs on the box. They said it would pushes lots of water at very good flow rates. It was … Read more
PVC Pipe Volume Calculator
So there you are with that bucket in your hands as the water vanishes down the drain. Forty gallons, the number’s imprinted on the box; … Read more
Pipe Friction Loss Calculator for Aquarium Plumbing
The tank might be rated at a thousand gallons an hour but the return line pushes only half that amount of water. The problem isn’t … Read more