i have a new stain of red alage stringee.. this tank is 4 years old the rock the sump the hoses ect.. but the water new water is rodi water salt is at 124.00 everything is good ph is 8.0 8.1 i am waiting for my new tests... salifert i have api..... that is why i am changing... i have a 70 gallan bow with a 225 coralife protein skimmer cf lights with athinics 3 heaters 3 1200 maxi power heads and alot of love....why all the red alagee and i have alot of green alage from the last people that i bought the set up from... I love the hobby and i spent alot of money on it and want to make sure my investment is safe...I have had alot of help in the past and want to continue having all the help that i have thank you to everyone who helps people like me ErEERRRR!!!:lol_large