Liquid Gardens Alder Cones, 25 Pieces - Natural Tannin Water

In this review of Liquid Gardens Alder Cones the bottom line is simple: this pack of 25 natural alder cones is for freshwater aquarium keepers who want a low-effort, eco-friendly way to introduce beneficial tannins and gently lower pH. The reviewer found the cones easy to use and effective at producing the soft, tea-colored water many shrimp and betta owners prefer, while also offering a slow-release food source for shrimp. For anyone rebuilding a natural biotope or reducing stress for sensitive species, these cones are a practical accessory to keep on hand.

Key Features

• Natural water conditioner: The alder cones release tannins that gently lower pH to better match many freshwater habitats, helping sensitive fish and shrimp feel more at home.
• Beneficial tannins: As the cones decompose they add tannins that can reduce stress and support healthier skin and slime coat in fish.
• Shrimp food source: The slow breakdown of cones creates biofilm and detritus that shrimp will graze on, supplementing their diet naturally.
• Easy to use: Simply add cones directly to the tank with no soaking or additives required, making them convenient for busy hobbyists.
• Eco-friendly sourcing: The cones are described as responsibly sourced, offering a renewable option for aquarium botanical use.

Who It's For

This product suits freshwater aquarium owners who keep shrimp, betta fish, or other species that prefer slightly acidic, tannin-rich water and a biotope aesthetic. It is particularly useful for hobbyists creating blackwater or planted tanks where lowered pH and a soft brown tint are desirable.

Those who should look elsewhere include aquarists running very small nano tanks where any water discoloration is undesirable, or owners of species requiring neutral to alkaline water; in such cases, other water treatments that do not change pH would be a better fit.

Pros & Cons

Pros

• Natural method to lower pH and introduce tannins without chemicals.
• Provides a supplemental food source for shrimp as cones decompose and generate biofilm.
• Easy, no-fuss use: add directly to the tank and monitor water color and chemistry.
• Responsibly sourced and renewable compared with synthetic additives.

Cons

• Will tint aquarium water a tea color, which some aquarists may not prefer.
• Effects on pH and tannin concentration are gradual and can vary, so testing is still required for sensitive setups.

Specifications

Product	Pack of 25 alder cones
Primary use	Freshwater aquarium tannins and water conditioner
Intended species	Shrimp, betta fish, freshwater fish
Action	Releases tannins as it decomposes
Application	Add directly to the aquarium
Sourcing	Responsibly sourced, renewable resource

Our Verdict

Liquid Gardens Alder Cones are a low-effort, natural choice for aquarists seeking tannins, a mild pH shift, and a shrimp-friendly biofilm source. They provide good value for anyone building a natural-looking, stress-reducing environment; just be prepared for gradual water tinting and to monitor chemistry if you keep species with strict pH needs.

Frequently Asked Questions

Do alder cones change water color?
Yes, they slowly tint water to a tea color as they release tannins, which is normal and part of their conditioning effect.

How do I add them to my tank?
Simply drop the cones into the aquarium; no pre-treatment is required though rinsing is optional if you prefer.

Are they safe for shrimp?
Yes, the cones are commonly used with shrimp because the decomposing material produces biofilm shrimp graze on and helps create a natural environment.