The manufacturer informs:

Extremely concentrated bacterial activator (about 15 times more than normal activators on the market) for an ultra-rapid start-up of marine and brackish aquaria; perfect in cases of overcrowding of the aquarium or restoration of the bacterial flora after a collapse. Its use is also indicated after moving or modifying the rochyte as well as, more generally, after maintenance operations such as cleaning the substrate or filter material.

• super-concentrated suspension of non-pathogenic bacteria, specifically formulated to very quickly establish bacterial flora in newly started aquaria
• very useful in emergencies requiring rapid restoration of the nitrifying capacity of biological material
• particularly suitable in overcrowded aquaria or when new specimens are added to the tank
• useful when restoring the bacterial load following major maintenance or modification of the rock or substrate
• ultra-rapid reduction of ammonia to nitrite

MicrōBacter Start XLM creates a nitrifying biological filter in marine and brackish aquaria of all types and is particularly useful in newly started aquaria that can be 'ready' in about 5-7 days in most cases. It rapidly removes ammonia and nitrite in a natural way through non-pathogenic nitrifying bacterial action.
Although it is a extremely powerful product, can be overdosed up to 5 times more than the nominal value in an emergency.

Conservation:

Although the product can withstand even high temperatures for short periods of time, for best longevity and maximum effectiveness, we recommend storing the product below 80°F (26.6°C) and, if possible, refrigerating at 50°F (10°C).

DO NOT FREEZE! Freezing can kill bacteria.

Warning: keep out of the reach of children. Not for human consumption.

Instructions and guidelines:

Important: First, use Brightwell Erase-Cl to completely remove chloramines and chlorine from tap water. Chloramine and chlorine are lethal to bacteria in this product.
Shake the product vigorously immediately before use. Add the desired amount of MicroBacter Start XLM by pouring it into a high-flow area to promote dispersion.
Do not use any other bacterial product until the cycle with this product is complete!

For newly started aquariums:
Add 30 ml (6 caps) of MicroBacter Start XLM per 95L of aquarium water. Switch off the UV steriliser, if fitted, throughout the cycle until the product dosage is complete. Test ammonia and nitrite levels daily or as required; if they are above 0.2 ppm, a reduced dose (10 ml per 95 litres) can be administered if desired.
After about 7 days, the aquarium can be considered mature if and only if ammonia and nitrite (NO2) levels are zero and nitrate (NO3) is well above zero.

To restore bacteria killed by extensive cleaning of substrates and surfaces:
add 10 to 30 ml per 95L depending on the perceived damage and ammonia level.

To replace bacteria killed by drugs:
add 30 ml per 95 L depending on the perceived damage; then add 5 ml every half hour until ammonia levels fall.