Gsp back wall

[greyhunter]

Today im starting my gsp back wall, how long till its spreads the whole thing? It tripled in size in about 2 months. My tank is a waterbox 20 gallon btw. (Dont mind the algea on the glass pls)

 

[TX_REEF]

it will take a while, that's a lot of real estate to cover for a small starting piece. give it time, it will happen! as it grows larger, the coverage speed increase is exponential.