# Filtration additive sera Preparat Filter Biostart 50 ml – biological filter starter for aquariums

**URL:** https://aio.lv/en/product--sera-se-03795--12270247
**Data updated:** 2026-04-16 14:16 (EEST)
**Category:** Aquarium Supplies
**Manufacturer:** sera
**Manufacturer code:** SE-03795
**EAN:** 4001942037952
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 11.49 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 9.50 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sera-se-03795--12270247

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

sera Preparat Filter Biostart 50 ml is a biological filter starter designed to accelerate the establishment of beneficial nitrifying bacteria in aquarium filters. Supplied as a 50 ml liquid, it helps reduce ammonia and nitrite spikes after filter cleaning, setup or stocking changes. Suitable for freshwater and compatible filtration systems to stabilize water quality and support fish health.

## Long description

sera Preparat Filter Biostart 50 ml is a liquid biological filter starter formulated to accelerate the establishment of beneficial nitrifying bacteria in aquarium filters. Supplied as a 50 ml bottle, it supports the rapid colonisation of filter media after setup, maintenance or stocking changes and helps reduce ammonia and nitrite peaks. The product is suitable for freshwater aquariums and is compatible with common filtration systems; it works alongside other sera biological products to stabilise water parameters and support fish health.
Advantages
sera filter biostart contains a balanced blend of live purification bacteria and biologically active enzymes that begin breaking down sludge from fish waste, uneaten food and decaying plant matter. Using this additive reduces the risk of toxic ammonia and nitrite spikes after cleaning or introducing new organisms, shortens the time needed to establish effective biological filtration and complements other sera products designed to continue and stabilise the nitrification process.
Suitable for
 Freshwater aquariums after filter cleaning or media replacement
 Newly set up tanks during the initial cycling phase
 Systems following stocking changes or after a disease treatment where biological load shifts
 Users who want to stabilise water quality quickly without immediate water parameter shocks
When it may not be suitable
sera filter biostart is not intended for saltwater or marine aquaria; its formulation targets freshwater nitrifying bacteria. It does not replace mechanical cleaning or appropriate water changes and will not remove chemical contaminants such as heavy metals or high phosphate levels on its own.
Key specifications
 Format: liquid dosing solution
 Volume: 50 ml
 Function: biological filter starter to promote nitrifying bacteria
 Intended water type: freshwater aquariums
 Active effect: supports reduction of ammonia and nitrite peaks by accelerating bacterial colonisation
How to use
Shake the bottle gently before use. Dose according to the manufacturer’s instructions relative to aquarium volume and follow any specific guidance for use after filter maintenance, media replacement or when adding new fish. Introduce the product directly to the aquarium or into the filter inflow area to help distribute bacteria through the filtration media. Monitor ammonia and nitrite levels during and after application and repeat dosing if recommended for complete biological establishment.
What to consider before purchase
 Suitable only for freshwater aquariums, not for marine use
 Complementary to other biological products and appropriate filter media for best results
 Not a substitute for mechanical cleaning, water changes or chemical treatments when required
Usage recommendations
Use sera filter biostart immediately after filter cleaning, media changes or when setting up a new aquarium. For optimal results, combine with appropriate filter media and follow up with sera bio nitrivec where longer-term nitrification support is needed. Regular water parameter checks ensure the biological balance is developing as expected.

## Specifications

| Feature | Value |
|---|---|
| Easy to clean | Yes |
| Easy to use | Yes |
| Aquarium capacity (max) | 2 L |

## FAQ

### How much does the sera Preparat Filter Biostart 50 ml cost, and is it available for purchase?

The price is 11.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 11 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 06.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All sera products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized sera service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/12270247/68193554_large.webp