Waterfall 60 - Lame d'eau inox 60CM - Oase UTILITÉ_ALGUES it is because there is

it is because there is a shortage of carbon dioxide (roughly "CO2") in the pond

Green Control ne contient pas de phosphates

Why not try choosing plants of different sizes

there are 2 options:

Dimensions : 10 × 15 × 22 CM

Waterfall 60 - Lame d'eau inox 60CM - Oase UTILITÉ_ALGUES it is because there is3 different widths allowing for personalized layout and simplified installation Graceful stainless steel water blades Elegant regular water figure up to 1 m high Scope of supply: a threaded hole at the rear and bottom, a stepped olive tip (19, 25, 32, 38 mm) and an ultra flat cap. Gives a homogeneous water figure and a precise waterfall Compact and robust water blade made of stainless steel 1. 4401 (V4A) Stainless steel waterfall element for the