Hello all.....
Last night, hearing strange gurgling, i checked my outer owerflow box, and saw this thingy inside, on of box wall, even pipes..... That place is always in dark, so really didnt pay attention what is inside....
Some spongy? growth thing? Pale yellow-ish color, i did close inspection of tank and sump, did not find it anywhere but in this outer overflow box....
Any chance to id, do i need to remove ir, good,bad, or simply ugly? Please ignore white dots on glass....
Thank you!

Last night, hearing strange gurgling, i checked my outer owerflow box, and saw this thingy inside, on of box wall, even pipes..... That place is always in dark, so really didnt pay attention what is inside....
Some spongy? growth thing? Pale yellow-ish color, i did close inspection of tank and sump, did not find it anywhere but in this outer overflow box....
Any chance to id, do i need to remove ir, good,bad, or simply ugly? Please ignore white dots on glass....
Thank you!





