Yes, u r right that gha juz a generic name for different variety of filamentous algae growing together. I have them in my tank too. Difficult to get rid of them once they start growing. Snails dun see to feed on them. Last time my seahare eats them. But now no more sea hare so these gha juz bloom!!
Or u can use nylon sock. Less cloaking. Can wash like once a week, less maintenance. Easier to wash. Juz pressure spray with tap water 2-3 times to rinse away the dirt on it inside out and vice versa. Its also fast to dry. Can get from madpetz the nylon type of filter sock.
Congrats to Mr Cedric Ang for winning the auction. I will pm u soon regarding collection details. Thks to all who have participated & for the support!!