Hydrophyliums or Hydrophylliums: How To spell?
The word Hydrophyliums is misspelled against Hydrophylliums, which is plural of "Hydrophyllium"
Hydrophylliums has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings hydrophy & iums which should not be misspelled with single 'L'
Wrong Spelling:  hydrophy-l-iums  Correct Spelling:  hydrophy-ll-iums 
Check more misspelled words of Hydrophylliums to spell it correct.