An all-in-one aquarium fertilizer is a single liquid that supplies every nutrient planted aquarium plants need, the macronutrients nitrogen, phosphorus and potassium plus micronutrients like iron and trace elements, so you do not have to dose them separately. For the vast majority of planted tanks in India, an all-in-one like Sunken Garden Green dosed two to three times a week is the easiest and most reliable way to keep plants healthy. This guide explains what is inside an all-in-one fertilizer, who should use one, how to dose it, and how it compares to dosing nutrients separately.
If you want lush plants without becoming a chemistry hobbyist, an all-in-one fertilizer is almost certainly the right choice. Here is why, and how to use one well.
What is an all-in-one aquarium fertilizer?
Short answer: One bottle that contains both macronutrients and micronutrients in a balanced ratio, dosed into the water.
Instead of buying and measuring separate bottles of nitrogen, phosphorus, potassium, iron and trace elements, an all-in-one fertilizer combines them all in a single, pre-balanced liquid. You dose it by your tank volume a few times a week, and it keeps every nutrient available to your plants. This simplicity is exactly why all-in-one fertilizers are the most popular choice for home aquariums. To see how it fits into the bigger picture, read our complete aquarium plant fertilizer guide.
What is inside an all-in-one fertilizer?
The exact ratio varies by brand, but a good all-in-one balances these so plants rarely run short of anything. Learn what each nutrient does in macro vs micro nutrients.
Who should use an all-in-one fertilizer?
- Beginners - the simplest possible way to fertilise; no mixing or measuring multiple bottles.
- Low-tech tanks (no CO2) - one all-in-one dosed lightly is perfect.
- Community & planted display tanks - balanced nutrition for mixed plants.
- Busy hobbyists - one bottle, a quick dose, done.
- Shrimp keepers - choose a shrimp-safe all-in-one; see safe for shrimp.
The main people who move away from all-in-one are high-tech aquascapers running CO2 who want to dose each nutrient independently - the EI dosing method.
The best all-in-one fertilizer in India
Our pick for most Indian planted tanks is Sunken Garden Green - a complete all-in-one that works in both CO2 and non-CO2 tanks, is shrimp-safe, and has an anti-algae formula. For lush, bushy Dutch-style layouts, Sunken Garden Vibrance is the high-impact option.
Sunken Garden GreenAll-in-one · CO₂ & non-CO₂ · ₹490 
Sunken Garden VibranceDutch-style · bushy growth · ₹490
Both are available in 100 ml, 200 ml and 500 ml sizes in the Sunken Garden range, alongside the rest of the Aquarium Fertilizer collection.
How to dose an all-in-one fertilizer
Short answer: Dose by tank volume per the bottle, 2–3 times a week, after a weekly water change, starting at the lower dose.
All-in-one fertilizers are dosed by your tank’s water volume in litres. A typical routine is a 25% water change once a week, then dosing the recommended amount two or three times across the week. Beginners should start at the lower end of the dose range and increase only if plants show they need more (slow growth, deficiency signs) and algae stays under control. The detailed method is in how to dose aquarium fertilizer and how often to add fertilizer.
All-in-one vs separate dosing
| Factor | All-in-one | Separate macro + micro |
|---|---|---|
| Simplicity | Very simple - one bottle | Complex multiple bottles/salts |
| Best for | Most tanks, beginners, low-tech | High-tech CO2 aquascapes |
| Control | Balanced ratio (fixed) | Full control of each nutrient |
| Cost at scale | Great value for home tanks | Cheaper per-dose for big tanks |
| Risk of error | Low | Higher needs knowledge |
For home planted tanks, all-in-one wins on simplicity and reliability. Only move to separate dosing if you run a demanding high-tech setup, see the EI dosing guide. You may still add root tabs for heavy root-feeders.
Do I still need root tabs with an all-in-one?
An all-in-one liquid feeds the water column, which covers most aquascaping plants. But heavy root-feeders, Amazon swords, cryptocoryne, vallisneria draw a lot of nutrients through their roots, so they also benefit from root tabs such as Sunken Garden Root Tabs pushed into the substrate near their base. Using both is the best of both worlds.
India-specific notes
For Indian aquascapers, an all-in-one is especially practical: it avoids sourcing several hard-to-find imported supplements, and a locally-made option like Sunken Garden Green is well-priced and reliably in stock. In hot months plants may use a little more, so watch growth and adjust. With hard tap water common in India, an all-in-one’s balanced NPK-plus-iron approach covers what your water does not already provide.
Frequently asked questions
What does all-in-one aquarium fertilizer mean?
It means a single fertilizer that contains all the nutrients plants need, macros (NPK) and micros (iron and trace elements), so you do not dose them separately.
Is an all-in-one fertilizer good for beginners?
Yes, it is the simplest way to fertilise a planted tank. One bottle, dosed by tank volume a few times a week.
How often do I dose an all-in-one fertilizer?
Typically 2–3 times a week after a weekly water change. Low-tech tanks need less; high-tech CO2 tanks need more.
Is all-in-one fertilizer enough on its own?
For water-column plants, yes. Heavy root-feeders like swords and crypts also benefit from root tabs in the substrate.
Is an all-in-one fertilizer safe for fish and shrimp?
Yes, when dosed correctly. For shrimp, pick a shrimp-safe, low-copper formula such as the Sunken Garden range.
What is the best all-in-one aquarium fertilizer in India?
Sunken Garden Green is an excellent value all-in-one for most tanks; Sunken Garden Vibrance suits lush Dutch-style growth.
Can I use an all-in-one in a low-tech tank without CO2?
Yes, dose it lightly. Low-tech tanks still need nutrients, just less than high-tech CO2 tanks.
All-in-one or separate macros and micros which is better?
All-in-one is better for most home tanks. Separate dosing only benefits demanding high-tech CO2 aquascapes.
Will an all-in-one fertilizer cause algae?
Not when dosed correctly. Algae comes from an imbalance of nutrients, light and CO2 - usually overdosing relative to light. Start low.
How much all-in-one fertilizer should I add?
Dose by your tank volume in litres per the label. Start at the lower recommended dose and adjust based on plant growth.
Does an all-in-one contain iron?
Yes, a complete all-in-one includes iron and trace elements along with the macronutrients NPK.
How long does a bottle of all-in-one last?
Depending on tank size and dose, a 200–500 ml bottle typically lasts a small-to-medium tank one to several months.
Can I switch from separate dosing to an all-in-one?
Yes, most hobbyists simplify to an all-in-one. Just match the dose to your tank and watch your plants.
Do floating and stem plants need an all-in-one?
Yes, stem plants, mosses and floaters feed from the water column, which an all-in-one supplies.
Is all-in-one fertilizer worth it?
For nearly every home planted tank, yes, it delivers balanced nutrition with minimum effort and low risk of dosing errors.
Keep it simple, shop all-in-one liquids in the Sunken Garden range and the full Aquarium Fertilizer collection at Fish Bazaar. For the fundamentals, see the complete fertilizer guide.
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