AJA Aqua Soil sera With EHEIM classic you have

With EHEIM classic you have everything that makes up a good external filter

Compatibility: Peaceful

Crustaceans

same as nitrogen deficiency signs (stunted growth)

High permeability- which can be aerobic nitrification and anaerobic denitrification- to make the water more stable- is the best biological filter material

AJA Aqua Soil sera With EHEIM classic you havePremium Aquarium Plant Soil Active Substrate for Planted & Shrimp Tanks Upgrade your aquascape with our premium aquarium plant soil, specially formulated to support strong root development, stable water parameters, and long term plant health. This nutrient rich active substrate is ideal for planted aquariums, aqua scaping setups, and shrimp tanks. Designed to create a natural aquatic environment, this soil helps maintain slightly acidic to neutral