Algae Takeover in a 1500-Gallon Koi Pond: Free Guide to Restoring Balance

Algae Types String algae (blanket weed) or green water (planktonic). Both signal nutrient/light imbalance. Free Resource Download Basic Pond Maintenance at pondmarket.com. It covers water testing, filtration, plant stock

Mystery Fish in a Koi Pond: Could It Be a Green Tench?

Description Match 5 inches, thin, wide head/mouth, single barbel pair, short flag-like dorsal fin, pale orange fading to white, peaceful. Matches green tench (Tinca tinca), a bottom-feeding cyprinid often sold for algae

Winterizing a Small Atlanta Pond: Fountain Care and Future Fish Prep

Current Situation (No Fish) In Atlanta (zone 7b/8a), a fishless pond needs minimal winter care. Run the fountain to prevent stagnation. If a hard freeze is forecast, unplug the pump to avoid ice damage. Adding Fish Next

DIY Tipping Pail for a Hand Pump Water Feature: Weighting and Pivot Tricks

Weight the Back Fill the rear of the pail with styrofoam (spray foam or blocks). This makes the front heavier, so water tips it forward. Adjust Pivot Points Move the handle pivots slightly toward the back. This increases

Quick Fix for String Algae: Manual Removal, Algaecide, and Biofiltration

Immediate Removal Net out as much string algae as possible. Algaecide Apply a pond-safe algaecide per label. It clumps remaining algae for easier netting. Repeat 3–4 times over two weeks. Long-Term Prevention Build a bio

Eliminating Blanket Weed (String Algae): Nitrogen Control, Shade, and Treatments

Cause: Excess Nitrate Blanket weed thrives on high nitrate. Test with a kit (pH, ammonia, nitrite, nitrate). Control Strategies Shade: pergola, netting, or a large shrub to block midday sun. Monthly 25% water changes (a

Managing Overgrown Water Lilies in a Concrete Pond: Division and Sludge Removal

Divide the Lilies In early spring, lift the root mass (use a tarp or net). Cut rhizomes into sections, each with a growing tip. Replant a few; compost or share the rest. Sludge Management Scoop out excess sludge with a n

Should You Build a Water Garden? Costs, Supplies, and Benefits

Cost Estimates (UK) Medium-large pond with fish and filter: ~£2,000 setup, £10–15/month running. Smaller ponds scale down. Where to Learn Local aquatic centers have expertise. DIY stores (B&Q) have materials but less kno

Planting Directly in Pea Gravel: Submerged and Marginal Plants for a Liner Pond

Submerged Plants (1–3 ft deep) Anacharis, hornwort, jungle valisneria—push stems into gravel. They root quickly and oxygenate. Marginals Need Shallow Water Most marginals want 0–6 inches. Your 15-inch minimum is too deep

Dealing with Groundwater in a New Pond Excavation: Water Table vs. Spring

Diagnose the Source Let the hole sit 24 hours. If water level stabilizes, its the natural water table. If it keeps rising, you hit a spring or broken pipe. Water Table Solutions Backfill to raise the bottom above the ta

Favorite Foliage Plants for Full-Shade Ponds: Taros, Water Lettuce, and Rushes

Foliage Over Flowers In full shade, flowering is minimal. Choose plants for striking leaves. Top Picks Taro (Colocasia) varieties—bold, colorful leaves. Water lettuce—rosettes of velvety leaves; may get leggy. Arrowhead

Flowering Aquatic Plants for Shady Ponds: Lilies, Marginals, and Floaters

Shade-Tolerant Water Lilies Hardy: Comanche, Indiana, Attraction, James Brydon, Texas Dawn, Virginia, Charlene Strawn. Tropical: Panama Pacific, Tina, August Koch, Director Moore, Shirley Bryne. They may flower less but

Safety First: Why a Below-Ground Fountain Tank Isn't Kid-Friendly

Health Risks A recirculating tank with spray/mist can aerosolize Legionella, Cryptosporidium, and other pathogens. Children playing in the spray are at risk. Commercial Displays Treat Water Public fountains use UV, ozone

Taming an Overpowered Wall Fountain Pump: Install a Bypass Valve

Check for Built-In Control Many pumps have a flow-adjustment knob or thumbwheel. Look carefully. Bypass Valve Installation Cut the outlet tubing. Insert a push-fit T-fitting (same diameter as tubing). Run a short tube f

Golden Orfe Bullying in a Small Pond: Stocking Density and Species Mix

Orfe Behavior Golden orfe are active, schooling fish that can harass slower, smaller fish—especially in small groups or crowded ponds. Fixes Increase pond volume (minimum 1 gallon per inch of fish). Add more orfe (6+) s

Converting a Copper Pot into a Fountain or Pond: Coating and Heat Concerns

Sealing the Copper Coat the interior with several layers of marine-grade polyurethane. Lightly sand between coats. This prevents copper leaching and protects the pot. Heat Warning In Central Florida, a metal pot in sun w

Solving Liner Uplift from Groundwater and Runoff in a Clay Courtyard Pond

Root Cause Red clay holds water. Rain and gutter overflow saturate the soil behind the liner, creating hydrostatic pressure that lifts it. Solutions Redirect gutter downspouts away from the pond. Install a perforated dr

Treating a Wounded Oranda: Mouth Injury, Infection, and Quarantine Care

Assessment The fish has a severe mouth injury (likely from shipping or aggression) with secondary bacterial/fungal infection. The V-shaped throat opening suggests permanent damage. Treatment Protocol Move to a 10–20 gal

Rescuing a Green, Sludge-Filled Pond: Biofilter, Peat, and Plant Management

Immediate Actions Build a biofilter (see previous article). Add pond peat or barley straw. Scoop out excess sludge with a net or shovel—dont remove all; some sludge hosts beneficial bacteria. Plant Care Trim yellowing le

Step-by-Step: Building a DIY Biological Pond Filter with Peat and Lava Rock

Materials Plastic container (~20 gal) Submersible pump Lava rock (2–3 bags) Pond peat (1 bag) Filter floss (AC filter media) Nylon mesh bag Assembly Place pump in container bottom. Cover pump with lava rock. Put peat