The phrase 'heavy need' is not correct and not usable in written English.
You could use the phrase 'pressing need' instead. For example: We have a pressing need for financial aid.
Some came with heavy needs for the pastor to pray over, bring them something from the man he reverently calls "my boss".
The boon can be attributed to the heavy needs of its primary customer, the Department of Defense.
Too often technology cannot be used because it is expensive, cannot be scaled, too complex, text heavy, needs internet all the time, not in accordance with socio cultural norms, or for so many similar reasons.
If the flow is extremely heavy (needing to change heavy flow pads or super tampons every hour because they are full) it is wise to see your Gynecologist and discuss the issue.
The application depends on the plants and their needs: Heavy feeders need more.
Those pumps are heavy and need electrical power.
If capital controls are too heavy, the need to comply with complex regulations hampers trade.
The house grew heavy with need, with an ache I understood.
Even devotees of heavy fiction need light aperitif "reads," like these summer whites.
