Hi, it looks like I will keep posting until the tank is clean of algae

What is this ? Bba ?
I thought only Gba and thread algae
I think I’m about to overload your brain - there are waaaaayyyy waaaaayyy more than two kinds of algae with more species than I care to think about.
There is so much more to them - a lot more than just considering whether they are Green, Brown or Red.
Algae are protists but they have characteristics like plants & like some animals. Plants have chloroplasts & can photosynthesize - so do algae. Some algae have flagella & centriole (an organelle) & can feed on organic material - like animals.
They may have single cells only a few microns in size (microalgae aka greenwater) or grow into massive multicellular organisms like giant kelp. They can live in salt or fresh water, wet soils, even on wet rocks.
They reproduce sexually, asexually or by a combination of those processes.
Single cell types can divide to reproduce - (which is how a healthy greenwater culture can grow extremely quickly), or release spores which may or may not be able to move independently - that varies with species.
Algae that reproduce sexually are typically induced to produce their gametes when certain environmental conditions regarding variations in temperature, light,
salinity, or nutrient availability provide the necessary stimulus.
Species like this produce a fertilized egg or a zygote to create new algae or else dormant zygospores that germinate when conditions are right for them.
There are seven major divisions of algae.
Euglenophyta (euglenoids - some believe they shouldn’t be classed with algae at all)
Chrysophyta ( diatoms & golden-brown)
Pyrrophyta ( fire algae - either dinoflagellates or cryptomonads - responsible for phenomena like Red tides)
Rhodophyta (red - Black brush or beard -
Audouinella sp., Staghorn -
Compsopogon caeruleus )
Chlorophyta - (green)
There are
thousands of different species of green algae which are both uni & multicellular and can have colonies with only a few to thousands of cells.
Some create
zoospores that have a flagellum to swim to a favourable spot - (aquarist’s nightmare) and others create
aplanospores - which rely on water currents to move them as they aren’t motile like zoospores.
Aquarists tend to divide green algae into a number of types largely based on gross appearances.
Green spot (GSA)
Choleochaete sp., stick quite tightly to surfaces - have zoospores.
Green dust (GDA) - no species is known but has zoospores. Doesn’t stick tightly to surfaces
Green fuzz -
Oedogoniums - stick to surfaces pretty tightly & have zoospores.
Green Beard (GBA) thought to be a more vigorous species of
Oedogonium - same as above
Blanketweed - a
Cladophora which is quite different from the one found in ‘
moss balls’. It has zoospores and sticks
very tightly to surfaces
Hair or
Thread
Made up of various filamentous algae, mainly from the following genera -
Spirogyra - aka water silk - produces aplanospores,
Rhizoclonium - may have either zoospores or aplanospores and
Oedigonium - has zoospores.
Paeophyta (brown - seaweeds including kelp)
Xanthophyta (yellow green & with fewer species than any of the others, most are freshwater)