Substrate
Substrate is whatever lines the bottom of your pond, gravel, sand, or bare liner. It looks like a purely style choice, but it actually affects how easy your pond is to clean and where waste ends up hiding. The Main…
Lokorio
Certified Aquaculture Expert & Founder, Memeilo PondsMoses Lokorio is a certified aquaculture expert with over 6 years of hands-on experience helping fish-pond builders create healthy, balanced pond ecosystems. At Memeilo.com, he writes detailed, data-driven guides to simplify pond construction, maintenance, and fish care for DIYers and professionals alike.
pH
pH tells you how acidic or basic your pond water is. Every fish has a range it likes best. But sudden swings in pH hurt fish more than a steady number that’s a bit off from ideal. What’s a Good…
Overstocking
Overstocking means keeping more fish, by weight, than your filter and aeration can handle. It rarely happens all at once. It usually creeps up slowly, without anyone noticing. How It Actually Happens Almost no one sets out to overstock their…
Nitrite
Nitrite is the second, most misunderstood step of the nitrogen cycle. It’s dangerous in a different way than ammonia, and that’s exactly why testing only for ammonia can catch pond owners off guard. How Nitrite Forms Bacteria in your biofilter…
Koi
Koi are ornamental carp, bred for centuries for color and pattern instead of food. They’re often the fish that turns a simple backyard water feature into a real, long-term hobby, one with different needs than most people expect. Koi Grow…
General Hardness (GH)
General Hardness (GH) measures the concentration of dissolved minerals, mainly calcium and magnesium, in pond water, and it’s a parameter most pond owners never test even though it quietly shapes how stable everything else stays. Hard Water vs. Soft Water…
GPH (Gallons Per Hour)
GPH, or Gallons Per Hour, is the standard number used to size a pond pump. Getting this wrong is one of the most common, and most costly, mistakes in setting up a pond’s filtration and aeration. The Basic Sizing Rule…
Fingerling
A fingerling is a young fish, about finger-sized. It’s past the most fragile early stage, but still not fully grown. This is the size most pond owners buy their fish at, since it’s a good balance of cost and hardiness.…
Eutrophication
Eutrophication happens when your pond builds up more nutrients than it can use. It’s the hidden driver behind most severe algae blooms, the kind that don’t just look bad, but can crash your pond’s oxygen levels overnight. Where the Nutrients…
Carrying Capacity
Carrying capacity is the most fish weight your pond can hold without water quality breaking down. It comes down to filtration and aeration far more than pond size alone. Size Isn’t the Real Ceiling A bigger pond with weak filtration…