How to Lower pH in Aquarium Naturally – No Chemical Compounds

how to lower ph in aquarium naturally
(Last Updated On: April 26, 2021)

How to lower ph in aquarium naturally? There are three simple methods to learn how to lower ph in an aquarium naturally without including chemical compounds that may hurt your fish. Let’s learn from this article how to lower ph in an aquarium naturally.

Many tropical fish-keeping enthusiasts buy fish from their native pet retailers and discover their mendacity on the underside of the tank a couple of days to weeks later for no obvious motive.

How to lower ph in aquarium naturally

Assuming that the tank has already gone by way of its cycle, the main perpetrator can normally be recognized as too high or too low a Ph level for the fish you are attempting to maintain.

South American cichlids, loaches, and catfish are normally the fish most affected, however different species from Southeast Asia additionally endure this drawback.

Fortunately, the next strategies will slowly buffer the water in your tank and gently lower the pH without utilizing harsh chemical compounds that may increase or lower the pH too rapidly.

1. Driftwood or Bogwood

Adding a bit of driftwood or bogwood to your tank will gently lower the pH level within the system naturally over a matter of days to weeks.

The driftwood acts as a filter to take away contaminants and buffer the tank water. The sole disadvantage to this technique is that originally, the wooden leaches tannic acid into the tank water and regularly provides the water a light brownish tinge.

The water coloration has no had an effect on the fish, in actual fact, many species want to live in stained water situations nevertheless, this may be minimized by pre-soaking the wooden before inserting it into the tank.



If you buy driftwood from a tropical fish store or online; utterly submerge the wooden in a plastic container for a few weeks before introducing it into your tank. This will cut back the quantity of stain that leaches into the water, nevertheless it additionally considerably reduces the effectiveness of the complete process.

Some people advocate boiling the wooden before soaking it to sterilize it. This practice is okay if the wood has not already been submerged, like bogwood, or collected within the wild from a neighborhood stream.

Some species of Loaches and Plecostomus eat the microorganisms that develop on the wooden, and several other species really eat the wooden itself. Boiling the bogwood partially defeats the advantages of utilizing it in your tank for these fish.

Be cautious about the place you buy the driftwood in your tank. For aesthetic functions, some suppliers add chemical compounds to the wooden that may kill your fish. These kinds of driftwood are largely used for reptile and amphibian terrariums.

The greatest and most cost-effective means so as to add driftwood to your tank is to gather it your self kind your native creek, stream, or lake.

Make certain the wooden is already submerged if you pull it from the water. If there’s an excessive amount of mud or grime on the wooden, rinse it off or use a strain washer to frivolously clear off the piece after which add it to your tank.

2. Indian Almond Leaves (Catappa)

Tropical fish-keeping enthusiasts have been utilizing Catappa, or Indian Almond Leaves for Blackwater aquariums, and as a “poor man’s water conditioner” for years.

The Almond leaves lower the pH of the water and soften it. Like driftwood and a few bogwoods, Almond



leaves additionally launch tannins into the tank water, nevertheless, these natural chemical compounds really stop and cure fish illnesses. The tannins act as an antioxidant and anti-inflammatory and are typically acknowledged as a natural health help or tonic for a lot of “blackwater” aquarium fish.

Most people soak the almond leaves in water to launch the tannins previous to including the leaves in their tank. Although this can preserve the water in your tank much less stained, it additionally reduces the effectiveness of the leaves.

Place the dried leaves in a 5-gallon bucket till they change into waterlogged and sink to the underside. This takes about a few days, then add them to your tank.
In their natural habitat, many South American tropical fish stay amongst submerged leaves on the underside of tannin-colored streams, ponds, and lakes with numerous natural litter.

These fish thrive with the addition of leaves within the tank and like dwelling in tannin-stained waters. The stained water additionally brings out the colors in these fish.

Like driftwood, you should purchase Catappa from tropical fish retailers, online, or gather native leaves yourself.

Over time the leaves will break down in your tank. You don’t need to take away the damaged down leaves out of your aquarium. It is not going to hurt your fish and after they have damaged down altogether, you may simply add more leaves.

Some species of leaves will take longer to interrupt down than others. Indian Almond Leaves break down in three to 4 months. Oak and Beech leaves will final at the least twice as long. Some leaves produce more tannins than others, so some experimentation is necessary.

How to lower ph in aquarium naturally

3. Peat Moss

Peat moss is one other solution to naturally lower the pH in your aquarium, however, peat moss can even discolor your tank water.

Except for some species of Killifish, one of the simplest ways to make use of peat moss is thru your outside filtration system.

Place some peat moss in a filter bag, a clean sock, or a piece of women’s pantyhose in your canister filter, and out of doors filter, or contained in the sump of your trickle filter.

The peat moss acts as a second “media filter” and because the tank water flows by way of the peat, it regularly lowers the pH within the tank.

Peat moss may be bought in the luggage of assorted sizes, as pellets, or in chunks from

Some tropical fish-keeping enthusiasts place a bag of peat moss within the nook of the tank till the right pH is achieved. This technique works effectively however distracts from the aesthetics of the aquarium.



Natural peat moss will give a yellowish-brown tinge to tank water because the pH is lowered. Many tropical fish-keeping enthusiasts advocate pretreating the peat moss in a separate bucket of water for a couple of days to cut back the quantity of tinge before placing it into the filter system.

Soaking appears to work without diminishing the effectiveness of the buffering qualities of the peat.

Some trial and error could also be wanted to focus on the pH you need in your aquarium.

The quantity of water modifications you carry out in your tank, how onerous your water is, and the way massive a system you’re treating all determines how a lot of peat you’ll need to drop the pH to the level you are attempting to realize.

Regardless of which technique you select, it’s all the time higher to learn how to lower ph in aquarium naturally in your tank reasonably than utilizing harsh chemical compounds that may alter the pH both an excessive amount or too rapidly.

Store purchased chemical compounds can lead to drastic modifications in water chemistry that may produce sickness or demise of your valued tropical fish.

The next time you need to change the chemistry in your aquarium, attempt utilizing these three simple methods to learn how to lower ph in the aquarium naturally.

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