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Formalin, Methylene Blue & Malachite Green
Could someone please advise:
A) Is it safe to use Formalin 37 o/o containing 8-12 o/o
Methanol to treat fish in planted tank? I read somewhere
that Formalin should be free from Methanol which is toxic
to small fishes. Are Formalin based fish medications
available from fish stores / mail order companies free
from Methanol? Which brand / product name? Is there a way
to remove Methonal from the Formalin solution before adding
it to the tank?
B) Which grade of Methylene Blue & Malachite Green is safe
to treat fish in planted tank? The chemical supply company
have them as Indicator grade. Is that pure enough and zinc
free, or we need reagent grade or pharmaceutical quality?
Where in U.S. can I get them in small quantity (a few
C) The effect of the above medications on plants, bio filter
and shrimps. Any special points to watch out e.g. water
change, water hardness, temp, PH, dissolved oxygen levels
etc.. prior to and during medications?
yhplsing at singnet_com.sg