Archivarium 2004

[TheVillageIdiot]

spoke w/ the local water treatment manager...

I've got soft water... if it's anything like roswell (right next door where I used to live, it's beteen 0-1kH)

they do treate w/ phosphate to remove heavy metals and this is the ppm meas. for what I asked them about...

iron 0.01
zinc 0.00
phosphate 0.50
floride 0.80
iondine - not tested
calcium 17 ppm
copper 0.00

my question is, do I need ro/di? I don't have a lot of extra money to spend on the tank, but I also want to be able to grow some of the hardier mushroom corals, green star polyps, etc... and I don't want to have algae blooms due to the phosphate levels, is there a risk based on the water params?

also, if I do need an ro/di can I save some money and leave out the di stage?
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20g planted - 1.5 wpg - pea gravel/sand/laterite - DIY co2