• Sets and holds pH 7.0 — a genuine target for community tanks that don't want strongly acidic or alkaline water.
• Conditions the same dose — removes chlorine and chloramine and detoxifies ammonia alongside the pH adjustment.
• Softens as it buffers — precipitates calcium and magnesium, which is also what can cause brief cloudiness after dosing.
• Treats water from under 1c per litre on the largest pack — see Specifications below for every size.
• Five pack sizes — 50 g through 4 kg, sized for a single tank or a fish room.

Neutral Regulator is a phosphate-based buffer — it is not phosphate-free. It will register on a phosphate test kit, and under strong lighting that phosphate can feed algae. Seachem's own guidance is to avoid it in planted aquariums, where a carbonate-based buffer is the better choice. It's also less effective in very hard, high-KH water, which resists the pH change — Seachem's Acid Buffer is the companion product for that situation.

*Calculated at Seachem's maintenance dose of 5 g per 40–80 L, using the conservative (40 L) end of that range, so the figures are the "worst case" cost — actual coverage is often better once a tank is on a settled maintenance schedule.

Use 5 g (one level teaspoon) per 40–80 L of water. In cases of high starting alkalinity, Seachem's guidance is that the product may be dosed daily until pH settles at 7.0; after that, dose once or twice a month, or as needed, to hold the target. Add directly to the aquarium or dissolve into replacement water during a water change.

Suitable for: freshwater community aquariums that want a stable, neutral pH around 7.0, including as part of dechlorinating and conditioning tap water at a water change.

Not suitable for: marine or reef tanks, which run a much higher target pH and are not compatible with this product's chemistry. Not the first choice for planted tanks, due to the phosphate content — use a carbonate-based buffer instead. Not very effective on its own in very hard, high-KH source water without additional support.

Keep out of reach of children. Cloudiness for a short period after dosing is normal, from the calcium and magnesium precipitating out — it clears as the precipitate settles or is filtered out. Persistent cloudiness beyond a day or so is worth investigating rather than dosing again.

• Seachem Acid Buffer — pairs with Neutral Regulator in very hard water where pH resists holding at 7.0 on its own.
• A reliable pH test kit — dose to your own readings rather than a fixed calendar, since tap water hardness varies by area.

Supplied as a dry powder in a sealed container. Faults, short fills and misdescription are covered by the consumer guarantees under Australian Consumer Law, in addition to anything Seachem itself offers.

Is Seachem Neutral Regulator phosphate-free?

No. It's a phosphate-buffered product, and it will register on a phosphate test. If you're running a planted tank and want to avoid adding phosphate, Seachem recommends a carbonate-based buffer instead.

Can I use this in a saltwater or reef tank?

No — Neutral Regulator is formulated and marketed for freshwater only. Seachem makes separate marine-specific buffers, such as Marine Buffer, for saltwater pH.

Why did my water go cloudy after dosing?

That's the water softening in action — calcium and magnesium precipitating out of solution. It's expected and normally clears within a day as the precipitate settles or is filtered out.

Will it work in my hard tap water?

It can struggle in very hard, high-KH water, which resists the pH change. Seachem's Acid Buffer is designed to be used alongside Neutral Regulator in that situation.

How often do I need to dose it once my tank is stable?

Once or twice a month at the standard 5 g per 40–80 L rate, or as needed based on your own pH testing — daily dosing is only for bringing a high-alkalinity tank down to 7.0 for the first time.