Neutro Combo - Low Tech (Small)

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Neutro Combo - Low Tech is an ALL IN ONE kit for the Low Tech (non CO2) aquarium. You make a little saving too!!

Neutro T is a liquid aquarium plant fertiliser which provides all the necessary trace elements including iron for your low tech planted aquarium. Low tech means aquariums which are not using pressurised CO2.  The ingredients in Neutro T are special. They work quickly and effectively when dosed as recommended. Your plants will show the benefits of this product and reward you in no time.

Dosage: This product needs to be dosed daily so that your plants have a steady stream of nutrients. There's little point in dumping a weeks worth of fertilisers in one go. Simply add 5ml per 100L every day. It doesn't matter what time of the day you dose, as long as it's every 24 hours.

If you are using CO2, then you need to dose Neutro+ which contains trace elements and macronutrients (it's an all in one solution). So Neutro T for low tech planted aquariums and Neutro+ for high tech planted aquariums.

However, regardless of what type of planted aquarium you have, we recommend using Neutro CO2 which is a liquid carbon supplement (see related products for more information).

Bottle sizes: Small = 500ml. Dosing chamber 25ml


Neutro CO2 is a liquid source of carbon for the planted aquarium.

For those of you not familiar with it, carbon is essential for all healthy plant growth and can be provided via gas, or liquid. The liquid form is less potent than gas but still very effective. It won't make your plants pearl (this is when you see O2 bubbles coming from the plant) but it will help them grow. Plants that have access to liquid carbon will do far better than those without.

What happens when plants don't have access to carbon?

Tap water has zero carbon in it so if you're not adding any to the water you can safely assume you have no carbon at all. So if you're not dosing it, plants will not photosynthesize as they should. As a result, they stop growing (or show stunted growth) and can't compete with algae for nutrients and the downward spiral begins. If this carbon deficiency continues, plants inadvertently (out of their control) release sugars and other nutrients which attract algae and it's these sugars and nutrients they so desperately need, but just can't hang onto.

It's a bit like vomiting (sounds gross but true). Without carbon, plants lose energy, nutrients, health and well-being. Their colours disappear. The end result? Algae everywhere.

So you can see why it's actually very important to dose carbon and why we recommend that all plants receive a daily dose because, without it, they will always struggle.

So the sooner you dose liquid carbon the better.

Can I double dose if I have algae?

You can - for short periods but no more than double. It's important to understand that if you do have algae, your tank has an imbalance and this isn't just down to carbon, it's other nutrients versus the amount of light you are pumping in.

Can I spot treat?

It is possible to spot treat plants or wood that have algae growing on them. Simply by using a pipette and extracting some Neutro CO2, squirt the carbon onto the plant or wood when it is outside of the water. Wait for 10 seconds then put it back into the water. You can also do this when performing a water change (it's easiest that way). But if you leave liquid carbon on for too long you will kill the plant.

DOSAGE: Add 1ml per 50L every day. It doesn't matter what time of day you dose this product, but it does need to be added every 24 hours.

Bottle sizes: Small = 500ml. Dosing chamber 25ml

by Peter H.
So far I've only used these item's for couple of weeks and all seems OK, plants are all ok and still growing so I assume it's working.

by Jack G.
Early days but plants are looking good

by Steven V.
Haven’t used the co2 but neutro is good

by Graham C.
Yet another excellent product from Aqua Essentials. First class customer services and delivery arrangements. After a few days I can already see the difference in my plants.

by Jan T.
I've been using these products for over a year and they keep the plants healthy and growing well in my tank

by Liam F.
Both bottles were leaking when they aarrived so assume they are filled from larger containers? No instructions regarding the integral dispensing element but nevermind. Despite needing only 1,2 or 3 cc for smaller tanks there is no pipette or other dosing instrument. Too early to say what it does for my tank/plants/algae

Ask a question about this product
Neutro Combo - Low Tech Small not doing as well as I thought it would I have used Neutro Combo - Low Tech Small (which has now run out ) also before I used it I was doin water changes and still doing water changes. The plants are not doing as well as I thought they would. but since using Neutro Combo all algae on my gravel and glass is gone. algae is growing on the plants as strong as ever even though my water now stands at no2=0 no3=0 ph=6.5 to 7 kh=180 gh= 120 last thing to go down was the ammonia which now stands between 0 and 0.5 and has been this low for some weeks. I have stopped liquid plant food and using plant pellets at the roots to try and keep feeding down in the water column.


You still have to do water changes regardless if you use this product or not!

If algae is growing on your plants, it's for many reasons, none of which are as a result of fertilisers as they DO NOT cause algae.

What does cause algae is:

1) poor water circulation

2) excessive lighting (too bright and too long)

3) insufficient water changes

4) not enough plants

5) insufficient numbers of algae eating shrimp

6) not enough or no fertilisers

By stopping using plant feed you will make the situation worse.

Can you tell me if this is fish and snail safe please.



is this safe for clown and yo yo loaches?



Silly question coming up. Just started feeding with the Neutro combo. The dosage given is per 100 litres. I have a 64 litre tank so with a bit of calculation I am doing the fertiliser at 3ml per dose and the CO2 at 1.5ml. Is that about right?


About right. I'd do 4ml Neutro T daily but stick to 1.5ml carbon

I have been using this product for 2 weeks and I am seeing signs of improvement in my plants. However my filter medium is getting heavily stained brown. Is this normal? And does it mean my filter is taking the fertiliser out of the water?


Don't worry - quite normal.

As long as you are not using carbon media then the fertilisers will stay in your aquarium

Good morning All Please could I ask if these products would increase the pH of the water? Thanks


No impact on pH 

Hi, I have been using this now for three weeks. and my plants are improving. However I have found my ammonia levels have gone from 0 to .25 and all my plants have brown furry algae growing on them and it is on an the filter and heater. I have a 64L tank, at 80 degrees lights on for 7 hours and a 30% weekly water change. I run a fluval 3 filter with polymax media instead of the polycarb media. Any ideas whats happening? Thanks


The ammonia is unrelated to the fertilisers so you need to investigate that more. Ammonia is also the number 1 food source for algae...

After working out why you have ammonia, you need to change more water (30% twice or three times a week) and reduce your lighting duration to 6 hours per day. You also need lots of plants as they use ammonia as a food source.

Hi My problem is similar to the one you answered above. I have used the product for 6 weeks and I also have large amounts of dark brown furry algae growing everywhere. However my ammonia is under control, when tested tonight 0. Also I do water changes every three days. Lights are on for 6 hours. I also have a 64 litre tanks. What amounts of fertiliser and CO2 should I give? as my algae problem is getting worse.


Add 25% more T

Reduce lighting intensity

Improve water circulation 

Add more plants

Add algae eating shrimp

Hiya, are these products safe for guppies and rubber lip pleco? Thanks :)


All our products are safe with live stock 

What is the copper content in the Neutro T fertiliser?


negligible - enough for plants, not enough to ever harm livestock

I’ve got a cold water tank and am about to buy some plants from you. What product do I need to use for food for them etc? Thanks


This one that you're looking at

Works for tropical and coldwater plants

I’ve looked at loads! The neutro T or the neutro co2 or both? Thx


both - Neutro Combo - Low Tech (Small)

Hi, is this product 100% safe for copper-sensitive lifestock like shrimp and puffers?



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